Question

In first gear, or low gear, an automobile's engine runs about three times as fast as the drive shaft. In second gear, the engine does not have to run as fast; usually it runs about 1.6 times faster than the drive shaft. Finally, in third, or high gear, the engine runs at the same speed as the drive shaft.

Engine speed = 3,500 r.p.m.
Transmission in first gear

Drive-shaft speed (to nearest r.p.m.) =.

A.1,167B.2,188C.5,600D.10,500

Answer 1

1167 r.p.m approximatley

Answer 2

Given:

• Engine speed = 3,500 r.p.m.
• Transmission in first gear

They want to know drive shaft speed when transmission is in 1st gear. It is given in the problem that in first gear,

engine speed = 3 times as drive shaft

Let's solve this by putting 3500 in engine speed. We have,

3500 = 3 * drive shaft speed

drive shaft speed = $\frac{3500}{3}=1166.67$. Rounding to nearest number is 1167 (rpm). Answer choice A is the right one.

ANSWER: A