Question

In a 500 m race, Iron Man can beat Spider Man by 125 m and Spider Man can beat Captain America by 20 m. In the same race, Iron Man can beat Captain America by:

• A. 105 m
• B. 130 m
• C. 140 m
• D. 145 m
• E. 120 m

Answer 1

The correct option is C

140 m

IM: SM = 500 : 375 and SM : CA = 500 : 480

$\therefore$IM : CA = $(\frac{IM}{SM}\times \frac{SM}{CA})=(\frac{500}{375}\times \frac{500}{480})=\frac{500}{360}=500:360$

$\therefore$IM beats CA by (500 - 360) m = 140m.