# math

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Miriam is four years older than Ricardo. 10 years ago she was 3 times as old as Ricardo was then.
A) How old are they now
B) determine whether your answer is correct by checking that it satisfies the conditions of the problems

• math -

Ricardo ----- x
Miriam ------ x+4

10 years ago:
Ricardo -- x-10
Miriam --- x+4-10 = x-6

at that time she was 3 times as old as Ricardo
x-6 = 3(x-10
x-6 = 3x - 30
-2x = -24
x = 12

Ricardo IS now 12
and Miriam is now 16

You check the answers to make sure the conditions fit.

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