Level 3
Sam and Ian have a bicycle race. Sam cycles at a speed of 12 km/h. Ian cycles at a speed of 16 km/h. If Ian lets Sam start 40 min before him, how long will Ian take to catch up with Sam?

Level 3
Kenny and Mike started jogging from the same point. Mike started jogging 4 minutes earlier than Kenny. Kenny's jogging speed was 500 m/min and Mike's jogging speed was 300 m/min. They went in the same direction and did not change their speeds throughout.

1. How long did it take for Kenny to catch up with Mike?
2. What distance would Mike have jogged when Kenny caught up with him? Express your answer in meters.

Level 3
Sam and Bryan are asked to give out the same number of leaflets. Sam can give out the leaflets in 9 hours while Bryan can give out the leaflets in 6 hours. Both workers started giving out the leaflets at the same time for 5 hours. After 5 hours, Sam gave out 180 leaflets. How many leaflets can Bryan give out in 5 hours?

Level 3
Ron and Benny take 4 days to assemble a toy plane. Benny and Jerry take 6 days to build the same toy plane while Ron and Jerry take only 3 days. How many complete days would the three of them take to build the same toy plane?

Level 3
Mr Gopi uses two pipes to fill a pool. The first pipe can fill the pool in 6 h. The second pipe can fill the pool in 8 h. Two house after both pipes are turned on, Mr Thomas accidentally opens the pipe which can drain the pool completely in 12 h. With the 3rd pipe now remained open, what is the total time taken by Mr Gopi to fill the pool completely? Express your answer in h.

Level 3
At 10 a.m., Mrs Leng used two taps to fill up a tank. Tap A could fill the tank in 4 h. Tap B could fill the tank in 3 h. 1 hour after both taps were turned on, Tap B was faulty and stopped working. Mrs Leng accidentally opened Tap C which could drain a full tank completely in 2 h. Instead of being filled, the tank was emptied. How long did it take for the tank to be completely empty? Express your answer in mixed number.

Level 3
King took 6 hours to drive from Point A to Point B while Jack took 4 hours to drive from Point B to Point A. When they met each other, they were 48 km away from the midpoint of Point A and Point B. What was King's speed?

Level 3
A rectangular container measuring 55 cm by 50 cm by 23 cm was ¹₁₀ filled with water. Mary turned on a tap at 9.36 p.m. to fill more water into the container. She turned off the tap at 9.59 p.m. The container was ⁹₁₀ filled with water. Given that the water flowed out of the tap at the same rate, find the volume of water that flowed out of the tap in a minute. Give your answer in litres.