made the mistake of dividing the fraction by 6/7 and so
got an answer which exceeded the correct answer by 13/70.
Find the fraction-
(1) 2/3 (2) 3/5 (3) 4/5 (4) 7/9
Solution:
Let the fraction = x
According to the question :
6/7 of x = x/6/7 – 13/70
⇒ 6x/7 = 7x/6-13/70
⇒7x/6-6x/7 = 13/70
⇒49x-36x/42 = 13/70
⇒13x/42 = 13/70
:. x= 13*42/70*13= 3/5
Then the option is (2) 3/5