A student can run 100 yards in 15 seconds. Convert this speed to miles per hour.
1 answer:
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Answer:
x = 49
Step-by-step explanation:
Given
=
( cross- multiply )
5(x - 16) = 3(x + 6) ← distribute parenthesis on both sides
5x - 80 = 3x + 18 ( subtract 3x from both sides )
2x - 80 = 18 ( add 80 to both sides )
2x = 98 ( divide both sides by 2 )
x = 49
