VTMO 2015 — Grade 5 — semifinal Question 11

Question 11

A bicycle’s rear-wheel diameter is $60 \,\mathrm{cm}$ and front-wheel diameter $50 \,\mathrm{cm}$. The rear wheel turns $700$ times. How many front-wheel turns occur?

$500$
$600$
$700$
$720$
$840$