Name : ____________________ Date : _____________
Score : _____________
Write down your correct answer and show your workings:
1) The ration of $2
notes to 50-cent coins in Mabel's piggy bank was 13:8.
She exchanged 24 pieces of $2 notes for some 50-cent coins, after which,
the ratio of $2 notes to 50-cent coins became 1:8.
What was the total value of $2 notes and 50-cent coins in the piggy bank
at first?
2) The ration of $5
notes to 20-cent coins in Mr Tan/ counter was 19:5.
Mr Tan exchanged 15 of his $5 notes for some 20-cent coins.
The ratio of the $5 notes to 20-cent coins then became 1:5.
What was the total value of $5 notes and 20-cent coins at first?
3) A box contained 50-cent
coins and 20-cent coins in the ratio of 2:3.
Peter took out four 50-cent coins, exchanged them for 20-cents and put
the money back into the box.
The ratio then became 2:7.
Find the sum of money in the box at first.
4) After 20 minutes
in a cross-country race, Alan has run 5/8 of the route while Bernard has
covered only 3/8 of the distance.
Both run at a uniform average speed and Bernard runs 60m/min slower than
Alan.
(a) Find the total distance of the race.
(b) If Bernard wants to finish at the same time as Alan, by how much should
he increase his average speed for the remainder
of the race?
Express the answer in m/min.
5) A, B and C are three numbers.
The average a, B and C is 5 greater tha the averaga of A and b.
If C is 38, find the total of A, B and C.
Answers:
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2)
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4)
5)
