SOLUTION: the difference of two numbers is 20. find the numbers if one is 3 times the other.

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Question 511657: the difference of two numbers is 20. find the numbers if one is 3 times the other.
Answer by Maths68(1474) About Me  (Show Source):
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the difference of two numbers is 20. find the numbers if one is 3 times the other.
Let
Numbers are x and y
x-y=20...........(1)
x=3y.............(2)
Put the value of x in (1)
3y-y=20
2y=20
2y/2=20/2
y=10
Put the value of y in (2)
x=3y
x=3(10)
x=30
Numbers are 30 and 10