Question

Mr. Campbell spent 80$ on groceries last week. This week, he spent 12% less. How much did he spend on groceries this week?

Answer 1

This concept is very simple. Do you know how to convert a percentage into a decimal?

Answer 2

no

Answer 3

Take the percentage (in this case, 12) and divide it by 100. What do you get?

Answer 4

8.3?

Answer 5

No... Divide 12 by 100. 12/100=?

Answer 6

You can use a calculator

Answer 7

0.12?

Answer 8

Correct!

Answer 9

Now, since it says 12% less than last week, what operation (+,-,*,/) do you think we will use?

Answer 10

subtraction?

Answer 11

Right!

Answer 12

So before we subtract it, we have to find out how much we are subtracting. To do this, we must find 12% of 80 simply by multiplying .12 and 80

Answer 13

960

Answer 14

Multiply 0.12 by 80, not 12

Answer 15

9.6

Answer 16

Correct!

Answer 17

Now we subtract 9.6 from 80

Answer 18

70.4

Answer 19

Right! So how much did he spend on groceries this week?

Answer 20

70.40$

Answer 21

Right! Good job! :D

Answer 22

thanks boo

Answer 23

Haha you're welcome

Answer 24

byeeeeee <3