Question

Mrs. Lavetan has 45 to complete her writing paper. She spend 10 and 1/8 min to planning her paper and 15 and 1/2 minutes weighting a rough drafts. How much time will Mrs.Laventan have to write her final copy?

Answer 1

Answer: 20 minutes

Explanation:

She has 45 mins to complete her writing paper.

She spends:
`10(1)/(8)` minutes to plan her paper.

She spends:
`15(1)/(2)` minutes writing rough drafts.

How much time left does she have?

`45-(10(1)/(8) +15(1)/(2))`

`45-(10+15((1)/(8)+(1)/(2)))`

`45-(25((1)(2)+(8)(1))/((8)(2)))`

`45-(25(2+8)/(16) )`

`45-(25(10)/(16))` Simplify the fraction.

`45-(25(5)/(8))`

`45-25((5)/(8))`

So she has approximately,

`20(5)/(8) =(165)/(8)= 20` minutes.