Noah was asked to compute the product of two numbers. He misread the problem and entered the sum of the two numbers instead. Luckily he still got the right answer. One of the two numbers is $8$. What is the other number?
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Noah was asked to compute the product of two numbers.
He misread the problem and entered the sum of the two numbers instead.
Luckily he still got the right answer. One of the two numbers is $8$. What is the other number?
8 + x = 8 • x
divide both sides by x to obtain 8/x + 1 = 8
8/x = 7
7x = 8
x = 8/7
check answer
8 + 8/7 = 64/7
8 • 8/7 = 64/7
