You may also like

Tummy Ache

Timmy, Tammy and Tommy all go to the doctors. In what order do they arrive at the surgery?

Bike Shop

If I walk to the bike shop, but then cycle back, what is my average speed?

Caught in the Web

Can you estimate the mass of insects caught by spiders in the UK each year?

Boys and Girls

Age 14 to 16 Short
Challenge Level
In September, the ratio of boys to girls in a school was 3:2.

By June, there were 80 fewer boys and 20 fewer girlsĀ in the school, and the ratio of boys to girls was 7:5.

What was the total number of students in the school in September?

This problem is adapted from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.