A wheel rotates 20 times every minute and moves 35 cm during each rotation. How many metres does the wheel move in one hour?
Pick
A) 6 metre B) 120 metre C) 220 metre D) 1200 metre E) 420 metre

Rationale: number of times wheel moves in 1 hour = 20 * 60 = 1200 : . distance moves = ( 1200 * 35 ) cms = 42000 cms in metres = 420 metre answer : e
Answer: E