Question

The average age of consisting doctors and lawyers is 40 if the doctors average age is 35 and the lawyers average age is 50 find th ratio of the number of doctors to the number of lawyers

Answer 1

adoctor. lawyers
35_______ 50

--------40--------
________________
10---------------- 5( after cross substraction)

so ratio is 2:1

2nd method......
let no. of doctors nd lawyers be x and Y respectively.....
then,
35x + 50y
________ =40
x + y

35x + 50y = 40x + 40y
10y = 5x
10/5 =x/y
so ,x:y =2:1