The average age of boys in the class is equal to the number of girls in the class. If the ratio of boys and girls in the class of 42 be 4 : 3, what is the total of the ages (in years) of the boys in the class
Number of boys = 42 *(4/7) = 24,
Number of girls= 18.
.'. Average age of boys = 18 years.
Total age of boys (24 * 18) years = 432 years.
Back To Top