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Popolare Word Problems >

A mother is currently 10 times older than her son. In 4 years time, she will be 7 times older than her son. Use sostituzione to find answer.

Soluzione

A m o t h er i s c u rre n tl y 10 t im es o l d er t han h er so n . I n 4 ye a rs t im e, s h e w i ll b e 7 t im es o l d er t han h er so n . U se s u b s t i t u t i o n t o f in d an s w er .

Soluzione

Boy^{'} s age is : 8

Mother^{'} s age is : 80

Fasi della soluzione

Translate the problem into an equation:

10 x + 4 = 7 (x + 4)

Risolvi per

x, 10 x + 4 = 7 (x + 4) : x = 8

Trova age

Boy^{'} s age is : 8

Mother^{'} s age is : 80

Esempi popolari

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