Question

the ratio of Michelle story books to Alina story book is 7 is to 5 aleena gives48 story books to Michelle she would have one by three of the number of story books has how many story books must michel return to Alina so that Elena would have and would have five times as many story books as Michelle​

Answer 1

Answer:

ratio of Michelle story books is to alina story book = 7 : 5

alina gives story book = 48

she would have no of story books = 1 by 3

elena would have = 5 times as many

7 : 5 = 48 1 : 3 5x

7 : 5 :: 1 : 3 = 48 5x

7 × 3 :: 5 × 1 = 48 5x

21 :: 5 = 48 5x

21 :: 5x = 48 -5

21 :: 5x = 43

5x = 43 - 21

5x = 22

x = 4.4