Question

The average age of consisting doctors and lawyers is 40. If the doctors average age is 35 years and the lawyers average age is 50 years, find the ratio of the number of doctors to the number of lawyers.​

Answer 1

Step-by-step explanation:

Correct option is

C

2:1

Let m and n denote the number of doctors and lawyers, respectively. Then

m+n

35m+50n

=40

So, 40(m+n)=35m+50n

5m=10n⟹

n

m

=2

Answer 2

Correct option is

C

2:1

Let m and n denote the number of doctors and lawyers, respectively. Then

m+n

35m+50n

=40

So, 40(m+n)=35m+50n

5m=10n⟹

n

m

=2