Question

if a is 10 percent higher than b, and ac is 32 percent greater than bd, then c is what percent greater than d?

Answer 1

@oldrin.bataku please help :3

Answer 2

please help :I

Answer 3

Just write out what you know, you know that a is 10% higher than b
So b = (1.1)a
now can you get the formula we need?

Answer 4

not really....

Answer 5

Well if you have
ac * what = bd

Answer 6

See how I converted the 10% into 1.1.

Answer 7

nope..... i thought 10% is only .1

Answer 8

Well yes but if A is 10% higher than B then A must be higher number than B. And if B is 1 then A must be 1.1. Do you understand that?

Answer 9

ohhh now i do

Answer 10

Okay so if ac is 32% more than bd what is the mathematical formula?

Answer 11

see those formulas are what got me stuck.....

Answer 12

Well the wording is the same as the one I did
a is 10 percent higher than b Then A (1.1) = B
ac is 32 percent higher than bd Then AC( ? ) = BD

Answer 13

ummm AC(1.32)=BD ?

Answer 14

Yup!

Answer 15

Okay now we need to substitute the first equation in to the 2nd equation
If A (1.1) = B

and you have the formula AC(1.32) = BD

Then you cano swap B for A (1.1). Do you understand that?

Answer 16

yess

Answer 17

Alright so you write that new formula.

Answer 18

wait so does that mean c is 22% greater than D?

Answer 19

AC=(Ax1.1)D

Answer 20

Well no sorry just follow the formula, it will tell you what you need to know at the end :p

& you are missing the 1.32 from your formula.

Answer 21

oh AC(1.32)=A(1.1)D

Answer 22

Yup, now you can divide by A to make it become

C(1.32) = d(1.1)

and now you are trying to find how much greater C is than D
So which side are you going to make 1 * (C or D)?

Answer 23

make dx1?

Answer 24

Yup.

Answer 25

so like do u do
\[d =\frac{ C \times1.32}{ 1.1 } \] ?

Answer 26

Yes.

Answer 27

then how do you do that? or just leave it like that?

Answer 28

well I would do 1.32/1.1 on my calculator first and then convert that back into a percentage.

Answer 29

umm i got 1.2 so 120%?

Answer 30

Yeah, it would be 120% but percent grater is C than D?

Answer 31

so C is 120% greater than D?

Answer 32

No sorry, think of C as 120% and D as 100% now how much greater is C than D?

Answer 33

oh!! 20%

Answer 34

Yes!

Answer 35

thanks!! :)

Answer 36

Your welcome :D

Answer 37

ummm can you check my answer for another question?

Answer 38

Sure

Answer 39

if 3/5 of m and if q is 9/10 of m, then, when q≠0, the ratio p/q is equal to what value? i got (2/3)

Answer 40

Is p supposed to be in the equation? I don't see it.

Answer 41

of sorry here:
if p is 3/5 of m and if q is 9/10 of m, then, when q≠0, the ratio p/q is equal to what value?

Answer 42

I get 3/2 :o

Answer 43

:o....

Answer 44

Nope sorry I was flipped around, I agree with you!

Answer 45

thanks ^^

Answer 46

Your welcome :D

Answer 47

back to my english hw now >.>
spending my summer in tutoring :-:

Answer 48

Ouch, well good luck with the rest of your homework, I'm going to bed :D Good bye!

Answer 49

k good night!