The boy, moving at a constant speed, covered the distance from his house to the school stadium in 1.5 minutes.

The boy, moving at a constant speed, covered the distance from his house to the school stadium in 1.5 minutes. On the way back, he spent 70 s. Where did the boy move faster – to the stadium or home? How many times faster?

Travel time from home to the stadium: t₁ = 1.5 minutes. = 90 s.
Let S go to the school stadium.
Speed on the way to the stadium:
v₁ = S / t₁ = S / 90 s.
Return speed:
v₂ = S / t₂ = S / 70 s;
v₁ <v₂.
v₂ / v₁ = (S / 70) / (S / 90 s) = 90/70 = 9/7 = 1.28.
Answer: The boy moved home 1.28 times faster.