One number is two times another. The sum of the number is 90 what are the two numbers

Question

Mathematics

Sydnee

5 September, 11:22

One number is two times another. The sum of the number is 90 what are the two numbers

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Answers (2)

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Sylvia · Answer 1

One number is 2 times another

x=2y

sum is 90

x+y=90

easy

x=2y

sub 2y for x

2y+y=90

3y=90

divide both sides by 3

y=30

sub back

x=2y

x=2 (30)

x=60

the numbers are 60 and 30

Yair Zuniga · Answer 2

1st number is x

other number is 2 times = 2x

sum of the numbers is 90: x + 2x = 90

Solve for x

x + 2x = 90

3x = 90

x = 30

First number = 30

second number = 2x = 2 (30) = 60