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Mathematics 17 Online
OpenStudy (anonymous):

Stephanie made 36 muffins. She made 24 apple muffins and the rest were banana. What is the ratio of apple muffins to banana muffins? A. 12 to 36 B. 24 to 36 C. 2 to 1 D. 2 to 3

OpenStudy (anonymous):

@Jack1

OpenStudy (jack1):

so how many banana did she make?

OpenStudy (anonymous):

12

OpenStudy (jack1):

sweet, so whats the ratio apple to banana a:b = 24:12 so divide both sides by 12, what do u get?

OpenStudy (anonymous):

a?

OpenStudy (anonymous):

oh c

OpenStudy (anonymous):

Thank you!

OpenStudy (jack1):

sweeeet ;) C.

OpenStudy (anonymous):

Which ratio correctly compares 60 mm to 45 cm? A. 2 : 150 B. 2 : 15 C. 4 : 3 D. 40 : 3

razor99 (razor99):

@Hilisa don't forget to give medals to your helper

OpenStudy (jack1):

60:45 common divisor is 5... or also 15...?

OpenStudy (anonymous):

go on

OpenStudy (jack1):

so u have a total ratio of 60:45 so what number do both sides divide by evenly? (common factor or divisor)

OpenStudy (anonymous):

2?

OpenStudy (anonymous):

wait no

OpenStudy (jack1):

no, 45/2 = 22.5 so not a whole number

OpenStudy (anonymous):

3?

OpenStudy (jack1):

yep, so divide both sides by 3 60:45, now becomes 20:15...keep going... what do 20 and 15 both have in common ?(common factor or divisor)

OpenStudy (anonymous):

its c!

OpenStudy (jack1):

perfect! u got this down ;)

OpenStudy (anonymous):

The label on a juice carton says there are 50 calories in a 4-ounce serving of juice. If Arthur drinks 12 ounces of juice, how many calories will he consume? A. 200 calories B. 150 calories C. 48 calories D. 58 calories

OpenStudy (anonymous):

okay let me see

OpenStudy (anonymous):

B!

OpenStudy (anonymous):

right?

OpenStudy (jack1):

spot on. B

OpenStudy (anonymous):

Which value is equivalent to 8.7% written as a decimal? A. 87.0 B. 0.087 C. 0.87 D. 8.7

OpenStudy (anonymous):

hmm not a

OpenStudy (anonymous):

wait no it isn't

OpenStudy (anonymous):

c?

OpenStudy (jack1):

i dont really get the question... but i think it's D...?

OpenStudy (jack1):

ah, no

OpenStudy (jack1):

sorry, sorry

OpenStudy (anonymous):

Which fraction is equivalent to 36%? A. B. C. D.

OpenStudy (jack1):

8.7% = 8.7 / 100

OpenStudy (anonymous):

wait what do you think it is?

OpenStudy (jack1):

= 0.087

OpenStudy (jack1):

also... ur fraction question... i cant see the fractions... ;P

OpenStudy (anonymous):

which fraction is equvilant to 36% a. 360 over 100 b. 9 over 25 c. 36 over 10 d. 3 6/10

OpenStudy (anonymous):

@Jack1

OpenStudy (jack1):

hey, sorry im bak now ;)

OpenStudy (anonymous):

k its not a

OpenStudy (jack1):

% to fractions .... so 36 / 100

OpenStudy (anonymous):

im sorry can you tell me im lost

OpenStudy (jack1):

per cent is always per 100 , so any number u see as a percent, and u want a fraction, put that number over 100... then reduce like we did with the first q's u posted

OpenStudy (jack1):

so ur ratio is 36 : 100 what are they both divisible by?

OpenStudy (anonymous):

2!

OpenStudy (anonymous):

its B!

OpenStudy (jack1):

yep, so becomes 18 : 50 ... keep going...

OpenStudy (jack1):

yep, B!

OpenStudy (anonymous):

yay! am i right?

OpenStudy (anonymous):

Yay!

OpenStudy (anonymous):

Dinner at a restaurant costs $36.00. Jeff left a 20% tip. What was the total cost of the dinner? A. $36.20 B. $28.80 C. $7.20 D. $43.20

OpenStudy (anonymous):

Thank you for the medal and all your help!

OpenStudy (anonymous):

okay lets see

OpenStudy (jack1):

np qt ;)

OpenStudy (jack1):

so 36 = meal cost

OpenStudy (anonymous):

umm. D

OpenStudy (anonymous):

is it D?

OpenStudy (jack1):

whats 20% of 36?

OpenStudy (jack1):

i doan hav a calculator, sorry... ???

OpenStudy (anonymous):

how do I figure it out with a calculator?

OpenStudy (jack1):

yeah, is D, 20% of 36 is something like $7 ish... so D is the only one that fits

OpenStudy (anonymous):

25% of a number is 80. What is 60% of the number? A. 53 B. 192 C. 320 D. 12

OpenStudy (jack1):

so the calculation would be $36 x 1.2 = answer

OpenStudy (anonymous):

It has to be b

OpenStudy (anonymous):

50% would be 160 so then just looking at the numbers wouldn't it have to be b?

OpenStudy (jack1):

so \(\large x \times 0.25 = 80\) so \(\Large x = \frac {80}{0.25} = 320\) 320 x 0.6 = answer

OpenStudy (anonymous):

Yay

OpenStudy (jack1):

yep, has to be B, totes right again ;)

OpenStudy (anonymous):

Kirk's family drove 36 miles in 50 minutes, which was 48% of the distance to his grandmother's house. What was the total distance to Kirk's grandmother's house? A. 75 miles B. 24 miles C. 17.28 miles D. 48 miles

OpenStudy (anonymous):

I have no idea on this one

OpenStudy (anonymous):

wait its a right?

OpenStudy (jack1):

36 miles = 48% of distance what is 100% of distance?

OpenStudy (anonymous):

is it a?

OpenStudy (jack1):

yep, A.

OpenStudy (anonymous):

The original price of a digital keyboard was $119.50. The keyboard was on sale for $109.94. What was the discount rate?

OpenStudy (jack1):

ratio, this time divide sale price by full price... = ???

OpenStudy (anonymous):

0.92?

OpenStudy (jack1):

yep, so new price is 92% of full price... so 8% off

OpenStudy (anonymous):

yay

OpenStudy (anonymous):

A lamp costs $87.75. If the sales tax is 8%, how much tax would be paid on this lamp?

OpenStudy (jack1):

? whats a sales tax?

OpenStudy (anonymous):

do you not know or are you seeing if I know?

OpenStudy (jack1):

i hav no idea what a sales tax is... we dont have them here

OpenStudy (anonymous):

I think its like the tax you pay on the purchase

OpenStudy (anonymous):

i dont know these confuse me

OpenStudy (jack1):

ah, k i c now

OpenStudy (anonymous):

How much interest will be paid in 1 year for a loan of $3600 at 8 1/2% simple interest?

OpenStudy (anonymous):

we need to answer that one and this one

OpenStudy (jack1):

so like $87.75 is the price of the lamp, including the sales tax so 87.75 / 1.08 = just the price of the lamp, so = ??? (again, no calculator, sorry)

OpenStudy (anonymous):

81.25?

OpenStudy (jack1):

ok... so the lamp price is 87.75... the cost of the lamp is 81.25, and the rest is the sales tax

OpenStudy (anonymous):

so 6.5 tax

OpenStudy (jack1):

yep, perfect ;)

OpenStudy (anonymous):

How much interest will be paid in 1 year for a loan of $3600 at 8 1/2% simple interest?

OpenStudy (jack1):

whoa... am i sitting ur exam...?

OpenStudy (anonymous):

huh?

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