Question

Aspen can work 25 math problems in 12 and half minutes . how long will it take her to work 38 problems?

a ( 17 minutes
b ( 19 minutes
c ( 76 minutes
d ( 78 minutes

Answer 1

The correct answer I think would be B. The reason being is that each problem takes her 2.08 minutes so if you divide that by 38 problems then it would take her 18.269 rounded up would be 19 minutes.

Answer 2

Answer with explanation:

Time taken by Aspen to solve 25 math problems

`=12 (1)/(2) \text{minutes}\\\\=12:30'`

Using Unitary method to solve this problem

25 math problems =
`(25)/(2) \text{minutes}`

`\rightarrow (25)/(25) \text{Math problem}=(25)/(25 * 2) \text{minute}\\\\\rightarrow 1 \text{Math Problem}}=\frac{1 \text{minute}}{2}\\\\\rightarrow 38\text{Math Problem}}=\frac{1 \text{minute}}{2}* 38\\\\\rightarrow 38\text{Math Problem}}=19 \text{minute}}`

Option B: 19 minute