Answers

  • Brainly User
2015-11-23T14:12:11+08:00
Total pages: x
First day: 1/5(x) pages
Second day:  3/8 of 4/5(x)  or 3/10(x) pages
Third day:  1/5 (x) + 48

Add the pages:
1/5(x) + 3/10(x) + 1/5(x) + 48 = x

LCD: 10

2x + 3x + 2x  + 48 = x
     10

7(x) + 48 (10) = x (10)
10x - 7x= 480
3x = 480
3x/x = 480/3
x = 160

The total number of pages of book is 160.

Check:
First day: 1/5 (160) = 32 pages
Second day: 3/10(160) = 48 pages
Third day:  32 + 48 = 80 pages

32 + 48 + 80 = 160
80 + 80 = 160
160 = 160

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