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Popular Word Problems >

mark is 4 times as old as johnny. in 20 years mark will be twice as old as johnny find the present age of both

Solution

ma r k i s 4 t im es a s o l d a s j o hnn y . in 20 ye a rs ma r k w i ll b e tw i ce a s o l d a s j o hnn y f in d t h e p rese n t a g e o f b o t h

Solution

Johnny^{'} s age is : 10

Mark^{'} s age is : 40

Solution steps

Translate the problem into an equation:

4 x + 20 = 2 (x + 20)

Solve for

x, 4 x + 20 = 2 (x + 20) : x = 10

Find age

Johnny^{'} s age is : 10

Mark^{'} s age is : 40

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