Question

Tan finished 3/5 of 45 math problems. Each math problem took him 1 4/5 of a minute to complete. At this pace, how much more time, to the nearest minute, will the rest of the problems take him to finish

Answer 1

To solve this problem you must apply the proccedure shown below:

1. Calculate the number of problems finished by Tan, as following:

`(45problems)((3)/(5) )=27 problems`

2. Calculate the number of problems that he has not finished:

`45 problems-27problems=18problems`

3. If each problem finished took him
`1^{(4)/(5)} minutes =1.8 minutes`, you have that the rest of problem will take him:

`(18 problems)(1.8minutes)=32minutes`

The answer is:
`32 minutes`