book Maths Puzzle Numerical Ability

A magnetic head has worn down to the chord line AB measuring .250 inch. If the orginal gap depth is .125 inch how much useful head life remains ?

Read Solution (Total 0)

book Other Question

8x^+16x=24 Working together, Sarah and Heidi can milk the cows in 3 hours. If they worked alone, it would take Heidi 1 hour longer to milk the cows than it would take Sarah. How long would it