exam Maths Puzzle Numerical Ability

I need help on this. Thanks.

Page 196

Number 4

A value decreased by 7

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exam Other Question

solve.

9/x-5 - 1 = 8/x+5
On a road map with a scale of 1/4 inch per 10 miles, the highway from Waukee to Winterset is 1 3/8 inches long. How many miles long is this highway?

A. 44
B. 55
C. 65
D. 70
E. 90