Question

Gain% of 350 when 250 is increased in the ratio 7:5

Answer 1

 250 and 7:5variable ‘X’ so here, X:250 = 7:5
 dividing = X / 250 = 7 / 5
 unknown variables X, X= 7/ 5 *250Thus X= 50*7
 X= 350
So right answer is 350:250=7:5