the sum of two numbers is 8. if their sum is four times their difference
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Answer:5 and 3
Step-by-step explanation:
Let the two numbers be a,b
Then, a+b=8 ...(1)
and, a+b=4(a−b) or 5b=3a⇒
b= 5
3a
Put value of b in equation (1)
a+
5
3a
=8
8a=8×5
a=5
Hence, b=
5
3a
=
5
3×5
=3
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