Puberty growth spurt

Se ele cresce 12 centímetros a cada ano; tendo 9 anos e crescendo até os 15, ele terá 6 anos para crescer: 6 x 12 = 72. altura inicial + altura atual = 111 + 72 = 183 cm.

When Ravi was 9 years old he was = 111cm

his growth rate is = 12 cm

he will be x cm taller at 15 years of age = [{15-9 = 6} x 12] = 72

so, he will be [111 + 72 =183]cm

9 anos --> 111 cm / 10 anos --> 111 + 12 = 123 cm / 11 anos --> 123 + 12 = 135 cm / 12 anos --> 135 + 12 = 147 cm / 13 anos --> 147 + 12 = 159 cm / 14 anos --> 159 + 12 = 171 cm / 15 anos --> 171 + 12 = 183 cm

15-9=6. 12*6=72. 111+72=183

6 x 12 = 72 111 + 72 = 183 cm.

111 centimeters when he is nine, 12 centimeters each year. 15 years of age = 12 x 6 (from the age of nine to fifteen) = 72 = 111 + 72 and that gives you his age at 15 years

(15-9) or 6.12=72 then 111+75=186