3 years ago

85/100 = x/80. What is the unknown quantity?

2 answers:

7 0

85 x 80 = 6800

6800/100 = 68

x = 68

6 0

Cross multiply then flip equation
85 * 80 and x * 100
6800 = 100x
100x = 6800

Now divide each side by 100
100x ÷ 100 = 6800 ÷ 100
x = 68

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