John must type 70 page.He want to type 1/5 of the number of pages tom. morning, 1/7 of the number left pages tom. afternoon and the remaining pages tom. evening. How many needed to type tom. evening?

Answer 1

1/5*70 = 14 pages in the morning....

1/7 * 70 = 10 pages in the afternoon...

70 - (14+10) = 70 - 24 = 46 pages in the evening

Note that 46/70 + 1/7 + 1/5 = 23/35 + 1/7 + 1/5 = (23 + 5 + 7)/35 = 1 = 100%

46 pages in the evening

Answer 2

Begin with what you need to type: 70 pages.

1/5 of 70 --> (1/5)*70 = 14 pages (typed tomorrow morning)

70 - 14 = 56 pages remaining.

1/7 of 56 --> (1/7)*56 = 8 pages (typed tomorrow afternoon)

56 - 8 = 48 pages (typed tomorrow evening)

Check your work:

14 (morning) + 8 (afternoon) + 48 (evening) = 70 pages total