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Mathematics

Grade-7

Easy

Question

The scale is marked at 3 inches = 15 yards of a playground drawing, then 50 inches on the map measures ______ yards in real-time.

250
400
500
350

The correct answer is: 250

The scale is marked at 3 inches = 15 yards
The scale is marked at 1 inches = $15 over 3 space equals space 5$
The scale is marked at 50 inches = 5 $cross times 50 space equals space 250$ yard
second method
$fraction numerator 15 over denominator 3 end fraction$ = $fraction numerator x over denominator 50 end fraction$ , $fraction numerator 15 over denominator 3 end fraction$ × 50 = $fraction numerator x over denominator 50 end fraction$ × 50, $fraction numerator 5 blank cross times blank 50 over denominator 1 end fraction$ = x, x = 250 yards.

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