Question

10. Reduce 280 in the ratio 7: 3.
11. If 20 copies of a book cost 13700 then what will be the cost of 35 copies of the book? Also,
find the number of copies of the book that can be bought for *2775.
​

Answer 1

Answer:

7x = 196

3x = 84

It is the correct answer

Answer 2

Answer:

Hope it helps you mate......Please mark as brainliest

Step-by-step explanation:

10.let 7 and 3 be 7x and 3x.

7x+3x=280/-

10x=280/-

x=28/-

Hence,7x =7(28)= 196/-

3x=3(28)= 84/-

11.Books        Cost

  20                 13700

    35                ?                             so,20/35*13700=4/7*13700=7828.57/-