Math Re-sit question because I'm stupid haha?

A small slab weighs 9 pounds.
1 kilogram= 2.2 pounds.

Convert pounds (lb) to kilograms (kg):

9 lb / (2.2 lb / 1 kg) = (9 / 2.2) kg = 4.0909 kg

or rounded 4.1 kg.

Tom can carry a maximum of 50kg. What is the maximum number of small slabs Tom can carry?

50 kg / 4.1 kg = 12.195

I think, there are no fractions of slabs. So,
Tom can carry 12 small slabs (at a time).