Question

the salaries of joys mother and father are in the ratio 7 is to 80 Joy's father earns rupees 12640 per month how much does his mother earn.​

Answer 1

Step-by-step explanation:

7:80=x:12640

product of means=product of extremes

so x×80=12640×7

x=12640×7/80

x=1106

so mother earns 1106