Question

a natural no. has divided into 2 parts in the ratio 7:11 if the difference of 2 parts is 20 , find the number and the two parts ??​

Answer 1

Answer:

a/b=11/9

a=11b/9

a-b=20

11b/9-b=20

11b-9b=180

2b=90

b=45

so. a-b=20

a=20+45

65

number=65+45=110