A family has an annual income of $68,400 of which 1/4 is budgeted for housing, 1/5 for food, and 1/8 for transportation. What fraction is left for other things?

Question

This question is for practice for a test.

Answer 1

1/4 + 1/5 +1/8

10/40 + 8/40 + 5/40        LCD is 40

23/40                               combine

40/40 - 23/40

17/40

 

17/40 is left for other things.

Answer 2

The whole budget is 1.

 

1/4 + 1/5 + 1/8 = 23/40

 

Since you need to get what's left, you got to subtract the value from 1.

 

1 - 23/40 = 17/40 *That is the fraction left...*

 

But if it's asking for the value, you need to multiply it to the whole value:

 

(17/40)*68400 = $29070