Question

A rod is broken into two parts such that the samaller parts is of length 6.3cm. if ratio of the length of the two parts is 7 : 3, find.
(a) the length of the longer part.
(b) the total length of the original rod.​

Answer 1

Step-by-step explanation:

The ratio of 2:3 means total length will be 2 parts + 3 parts i.e. total 5 parts .

Now 5th part of 90 cm will be 90/5= 18 cm ,

2 x 18 = 36 cm the length of shorter length

similarly

3 x 18 = 54 cm the length of longer part.

in total 36+54= 90.