Level 3 PSLE
The photocopying rates of two machines A and B are as shown. Both machines were use to make a copy of a set of notes which had been divided into teacher set and student set. Machine A took 7 minutes is to photocopy teacher set and Machine B took 9 minutes to photocopy student set.

1. How many pages were there altogether in the set of notes?
2. Another copy of the same set of notes was made using Machine B only. How many minutes did Machine B take?

Level 3 PSLE
One copier took 60 minutes while another took 100 minutes to print the same number of leaflets. The faster copier printed 6 more leaflets per minute than the slower one.

1. The slower copier completed the job at 2.00 p.m. At what time was the printing started?
2. What was the total number of leaflets printed by the two copiers?

Level 3
When both printers U and V are used, a collection of books can be printed in 3 hours. While printing, Printer U broke down. As a result, it took 1¹₃ hours to complete printing. If it would take Printer V 4 hours to print the collection alone,

1. how long would it take to print the collection of books using only Printer U? Express your answer in hours.
2. how long was Printer U used before it broke down? Express your answer in hours.

Level 3
During Christmas, Vincent's candle and Ethan's candle were placed on an altar. Vincent's candle was 3 cm longer than Ethan's candle. Vincent's candle and Ethan's candle were lit at 5:30 p.m. and 9:00 p.m. respectively. They burnt down to the same height at 10:30pm. At 1:30 a.m., Ethan's candle was burnt out while Vincent's candle was burnt out at 3:30 a.m. Find the original heights of Vincent's candle and Ethan's candle.