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Popular Word Problems >

Mia is twice as old as Nina. In three years, the sum of their age will be 21. How old is Nina?

Solution

M ia i s tw i ce a s o l d a s N ina . I n t h ree ye a rs, t h e s u m o f t h e i r a g e w i ll b e 21. Ho w o l d i s N ina ?

Solution

Nina^{'} s age is : 5

Solution steps

Translate the problem into an equation:

2 x + 3 + x + 3 = 21

Solve for

x, 2 x + 3 + x + 3 = 21 : x = 5

Nina^{'} s age is : 5

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