1. Mr Yeo bought 4 times as many spoons as bowls and spent $495 in total.
He spent $15 more on the bowls than on the spoons.
If a bowl cost $6.50 more than a spoon, what was the cost of a spoon ?
2. A car took 5 hours to travel from Town A to Town B while a bus took
4 hours longer to travel from Town B to Town A.
Both vehicles set off at the same time and moved towards each other.
Two hours later, they were 255 km apart. What was the speed of the bus ?