9 Two buses, bus A and bus B, both use the same bus stop.
Bus A runs every 10 minutes.
Bus B runs every 14 minutes.
Both buses are at the bus stop at 11 am.
What time will both buses next both be at the bus stop.
(Total for question 9 is 3 marks)
10 Light A flashes every 8 seconds.
Light B flashes every 20 seconds.
Both lights flash at the same time.
Work out how long it will take for both lights to flash at the same time again.
.........................................… seconds
(Total for question 10 is 3 marks)