Question

a rope of length 75m is cut into three pieces in the ratio 3 :5:7:.find the length of each piece of the rope

Answer 1

3x+5x+7x=75m = 15x=75m so x=5m so length is 5m

Answer 2

3x+5x+7x=75
15x= 75
x=75÷15
c=5
thus 3x=15
5x=25
7x=35