Question

John can type 10 pages in 5 minutes. Mary can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?

Answer 1

Answer:

60 pages in 30minutes 30 pages in 30minutes

Answer 2

Given,

• John can type 10 pages in 5 minutes.
• Mary can type 5 pages in 10 minutes.

To Find,

• Working together, how many pages can they type in 30 minutes

Procedure,

Pages that John can type in 30 minutes

John can type 10 pages in 5 minutes. (Given)

In One Minute John can type = 10 / 5

So, John can type 2 pages in 1 minute.

Therefore,

John can type in 30 minutes = 30 × 2

= 60 pages

Pages that Mary can type in 30 minutes

Mary can type 5 pages in 10 minutes. (Given)

In Two Minute Mary can type = 2 × 5/10

So, John can type 1 pages in 2 minute.

Therefore,

Mary can type in 30 minutes = 1 × 15

= 15 pages

Solution,

They can type 60 + 15 = 75 pages in 30 minutes