Question

Darius needs to solve 45 math problems for his homework assignment. He already completed 15 of the problems in morning study hall. He then worked from 3:15 to 4:30 to

complete the remainder of the problems. How many minutes does it take Darius to complete one problem?
Answer
A) 2/5 minute
B) 1 1/4minutes
С) 1 2/3minutes
D) 2 1/2minutes

Answer 1

its c

Explanation:

its C because 3;15 through 4:30 is already a 1hr and is you subtract 3-1 is gonna give you 2 but if that not enough i best advise to elimanate a and d

Answer 2

Option D:
`2(1)/(2)` minutes is the correct answer.

Explanation:

Given that:

Darius needs to solve 45 math problems. He as already solved 15 problems.

Remaining problems to be solved = Total - Already solved

Remaining problems = 45-15 = 30 problems

Time worked = 3:15 to 4:30 = 75 minutes

Darius have 75 minutes to solve 30 problems.

Time for one problem =
`(remaining\ problems\ to\ solve)/(time\ worked)`

Time for one problem =
`(75)/(30) = (5)/(2)\ minutes`

Time for one problem =
`2(1)/(2)\ minutes`

It takes Darius
`2(1)/(2)` minutes to complete one problem.

Hence,

Option D:
`2(1)/(2)` minutes is the correct answer.