Risa had a textbook with 170 pages. She read 50% of the textbook on Monday, 20% of the textbook on Tuesday and the rest on Wednesday.
- How many pages did she read on Wednesday?
- How many more pages did she read on Monday than on Wednesday?
(a)
100% → 170
1% → 170 ÷ 100 = 1.7
Number of pages that Risa read on Wednesday in percent
= 100% - 50% - 20%
= 30%
Number of pages that Risa read on Wednesday
= 30 x 1.7
= 51
(b)
Number of more pages that Risa read on Monday than on Wednesday in percent
= 50% - 30%
= 20%
20% → 20 x 1.7 = 34
Number of more pages that Risa read on Monday than on Wednesday = 34
Answer(s): (a) 51; (b) 34