classwork (TIME)

2. (a) A late night radio programme began at 2245 one evening and finished at 0320 on the following morning. For how many minutes did the programme last?

(b) A small bird enters its nest on average every 40 seconds, when it is feeding its young. How many visits to the nest does the bird make, on average, each hour?

6. (a) An overnight train left Singapore at 2240 and reached Kuala Lumpur at 0515 on the following day. How long did the journey take? Give your answer in hours and minutes.

(b) A worker in an electronics factory can complete one circuit panel in 3 minutes 25 seconds. Assuming that he continues to work at the same rate, calculate how long it will take him to complete ten identical circuit panels. Give your answer in minutes and seconds.

10. (a) Calculate the number of minutes there are in a day.

(b) (i) An aircraft was due to take off from Hong Kong at 1645. Because of bad weather it did not take off until 2110. For how long, in hours and minutes, was it delayed?

(ii) The aircraft developed a fault and returned to Hong Kong after a flight lasting 5 hours 25 minutes. At what time the next morning did it land?

14. (a) Calculate the number of minutes between noon and midnight.

(b) (i) An aircraft was due to take off from Singapore at 1740. Because of the bad weather it did not take off until 2215. For how long, in hours and minutes, was it delayed?

(ii) The aircraft developed a fault and returned to Singapore after a flight lasting 4 hours 10 minutes. At what time the next morning did it land?

17. (a) (i) A television programme lasted for 1 hour 25 minutes. The programme started at 09 40. At what time did it finish?

(ii) This programme was one of a serried of 5 programmes each of which lasted for 1 hour 25 minutes. How long did the 5 programmes last together?

(b) Another television programme lasted for 2 hours 12 minutes and finished at 0145. At what time did the programme start?

23. The diagram shows a timetable, part of which has been torn away, for trains from Manchester to London.

Manchester (depart) London (arrive)

08 35 11 25

12 31 15 19

17 15 20

22 37

(a) How many minutes does the train which departs at 1231 take to reach London?

(b) The 2237 train takes 2 hours 45 minutes to reach London. At what time does it arrive?

year 10 assignment

Mr Edwards, Mr Jones and Mr Parry each decided to buy a new car which was priced in the showroom at $ 7200.

(a) Mr Edwards offered his old car in part exchange and the salesman allowed him $ 5850 towards the cost of the new car. Calculate how much more Mr Edwards had to pay for his new car. [ans : $ 1350]

(b) Mr Jones paid for his new car in cash and was given a discount. Given that he paid $ 6120 for his new car, calculate the percentage discount he received. [ans : 15%]

(c) Mr Parry agreed to pay 40% of the showroom price of the car as a deposit and the balance in equal monthly instalments over a period of 2 years. Calculate the amount of each monthly instalments. [ans : $ 180]

(d) The salesman had hoped to sell each new car for $ 7200 so that he could make a profit of 20% on the cost price. Calculate the cost price of each new car. [ans : $ 6000]

Hints

(a) Mr Edwards was virtually paying the new car with his old car. The salesman agreed, but said that his old car only worth $ 5850. So, Mr Edwards need to pay the remainder, but by how much? (very easy question).

(b) The discounted price of the new car is $ 6120. So, how much is the discount? Use the “before after” method.

(c) First, find 40% of $7200.

Secondly, deduct your answer from $7200.

Lastly, this remainder is to be divided by the no. of months in 2 years. (of course you know how many months)

(d) We are looking for the original price here.