Tlali has a son, Nqobani. Here are some facts about how old Tlali and Nqobani are:Tlali is 5 times as old as Nqobani right now.11 years from now, Tlali will be 3 times as old as Nqobani.How old are Tlali and Nqobani now?

解

Tl a l i ha s a so n, Nq o bani . Here a re so m e f a c t s ab o u t h o w o l d Tl a l i an d Nq o bani a re : Tl a l i i s 5 t im es a s o l d a s Nq o bani r i g h t n o w .11 ye a rs f ro m n o w, Tl a l i w i ll b e 3 t im es a s o l d a s Nq o bani . Ho w o l d a re Tl a l i an d Nq o bani n o w ?

Nqobani^{'} s age is : 11

Tlali^{'} s age is : 55

解答ステップ

Translate the problem into an equation:

5 x + 11 = 3 (x + 11)

x

を解く

5 x + 11 = 3 (x + 11) : x = 11

発見する age

Nqobani^{'} s age is : 11

Tlali^{'} s age is : 55