Question

Martha paid $42.40 for her sister’s birthday present. This included 6% sales tax. What was the cost of the gift before tax? Would this be $40.00

Answer 1

Write an equation and solve. Round to the nearest hundredth where necessary. 19 is what percent of 40?

Answer 2

21 is 35% of what number?

Answer 3

frist one is correct

Answer 4

Thankyou!

Answer 5

60 for the 2nd one because 35% of 60 is 21 :)

Answer 6

What about the others?

Answer 7

Amount Martha paid = $ 42.40
Sales tax = 6%
So, the sales tax is = 6/100*42.40 = 2.544
Amount without sales tax = $ 42.40-2.544 = $ 39.856 = $ 40.

Second Question
35/100*x = 21
35x/100 = 21
Cross multiply
35x = 21*100
x = 21*100/35 = 60

Answer 8

last one is 47.5%

Answer 9

Sorry I meant the last question

35/100*x = 21
35x/100 = 21
Cross multiply 35x = 21*100
x = 21*100/35 = 60

Answer 10

For the second question, we take the % as x% so,
x/100*40 = 19
Cross multiply.
40x/100=19
40x=19*100
x = 1900/40 = 47.5%

Answer 11

Thankyou!!!

Answer 12

=)