Question

19. The average age of 5 boys is 19 years. A new boy joins them and their average age increases to 20 years. What is the age
of the new boy?​

Answer 1

Answer:

Step-by-step explanation:

Present average age of 4 boys (9+5) = 14 years.

Sum of Present ages of the 4 boys = 14 × 4 = 56 years

Present sum of ages of the 5 boys = 15 × 5= 75 years

Present age of the new boy = (75−56)= 19 years

Answer 2

Answer:

Total age of 5boys(5*19=95)

Total age of 6boys(6*20=120)

so,the age of new boy is(120-95=25)

ans;25