Question

a piece of ribbon of length 84cm is divided into three pieces into the ratio of 1 : 4 : 7 calculate the length of the longest​

Answer 1

Let the common ratio be x
1x+4x+7x=84
12x=84
X=7
4*7=28
7*7=49
So we can see 49cm has the longest length

Answer 2

Answer:

Let the common ratio be x

1x+4x+7x=84

→12x=84

→X=7

→4*7=28

→7*7=49

So we can see 49cm has the longest length