Question

Erica can solve 30 addition problems in 15 minutes. If she works at the same rate, how many problems can Erica solve in 2 minutes?

Answer 1

Erica can solve 4 problems in 2mins.

Explanation:

30 divided by 15 is 2, meaning she solves 2 problems in 1min. To solve for 2mins you have to multiply 2 by 2 and you get 4.

Answer 2

4 problems.

Explanation:

30 is double 15,

4 is double 2

Hope I helped!