Asked by Anonymous
tHE SUM OF THREE NUMBERS IS 75. THE SECOND NUMBER IS 5MORE THAN THE FIRST AND THE THIRD IS THREE TIMES THE SECOND. FIND THE NUMBERS.
Answers
Answered by
straight A student
Let A,B and C be the numbers.
1.A%2BB%2BC=75
B=5%2B4A
C=2A
Substitute into eq. 1,
A%2B5%2B4A%2B2A=75
7A%2B5=75
7A=70
did i help confusing aye?
.
.
.
B=5%2B4%2810%29
highlight%28+B=45%29
.
.
.
C=2%2810%29
highlight%28+C=20%29
1.A%2BB%2BC=75
B=5%2B4A
C=2A
Substitute into eq. 1,
A%2B5%2B4A%2B2A=75
7A%2B5=75
7A=70
did i help confusing aye?
.
.
.
B=5%2B4%2810%29
highlight%28+B=45%29
.
.
.
C=2%2810%29
highlight%28+C=20%29
Answered by
Reiny
Don't know what all this is.
let the first be x
then the second is x+5
and the third = 3(x+5)
x + x+5 + 3(x+5) = 75
x+x+5+3x+15 = 75
5x = 55
x = 11
the numbers are 11, 16, and 48
let the first be x
then the second is x+5
and the third = 3(x+5)
x + x+5 + 3(x+5) = 75
x+x+5+3x+15 = 75
5x = 55
x = 11
the numbers are 11, 16, and 48
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