Question

Andrea had 32 problems to do for mathematics homework over the weekend. She did 1/4 of the problems on Friday night, and on Saturday she did 1/4 of the problems that were left to do. What was the total numbers of problems that Andrea needed to do on Sunday in order to complete her mathematics homework?

Answer 1

Number of problems that is left for Andrea to on Sunday =18

Explanation:

Total number of problems Andrea had = 32

Problems solved by Andrea on Friday night was
`(1)/(4)` of the problems which is =
`(1)/(4)* 32=8`

Problems now left =
`32-8=24`

Problems solved by Andrea on Saturday night was
`(1)/(4)` of the problems left which is =
`(1)/(4)* 24=6`

∴ Number of problems that is left for Andrea to on Sunday=
`24-6=18`