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Popolare Word Problems >

Mark is 7 years older than Mariah. In 4 years the sum of their ages will be 77. How old is Mark now?

Soluzione

M a r k i s 7 ye a rs o l d er t han M a r iah . I n 4 ye a rs t h e s u m o f t h e i r a g es w i ll b e 77. Ho w o l d i s M a r k n o w ?

Soluzione

Mark^{'} s age is : 38

Fasi della soluzione

Translate the problem into an equation:

x + 4 + x - 7 + 4 = 77

Risolvi per

x, x + 4 + x - 7 + 4 = 77 : x = 38

Mark^{'} s age is : 38

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