Mr Tang has some 20-cent and 50-cent coins.

The ratio of the value of the 20-cent coins to the value of the 50-cent coins is 7 : 6.

Find the ratio of the number of 20-cent coins to the number of 50-cent coins.

[Ans: 35 : 12]

## Monday, August 29, 2011

### Decimal P5 Question

Box A contained 1.36 kg of sand, box B contained 0.6 kg of sand, box C contained 1.68 kg of sand and box D contained 1.54 kg of sand.After some sand was transferred from box C to box A and from box D to box B, boxes A and B had the same amount of sand and box C had 5 times as much sand as box D.

(a) How much sand was transferred from box D to box B? [Ans: 1.315 kg]

(b) How much sand was transferred from box C to box A? {Ans: 0.555 kg]

(a) How much sand was transferred from box D to box B? [Ans: 1.315 kg]

(b) How much sand was transferred from box C to box A? {Ans: 0.555 kg]

### Fraction P5 Question

William had $6 and Xena had $40 at first.William save 90 cents a day and Xena saved 40 cents a day.

(a) How long did it take William to save $18? [20 days]

(b) How long did it take for William's total money to be 1 1/2 times of Xena's total money? [Ans: 180 days]

(a) How long did it take William to save $18? [20 days]

(b) How long did it take for William's total money to be 1 1/2 times of Xena's total money? [Ans: 180 days]

### Fraction P5 Question

Amy saved 5/8 of her salary every month and she spent the rest.

Ben saved 3/7 of his salary every month and he spent the rest which amounted to $600.

Amy took 1 1/6 years less than Ben to save $12600.

(a) What was Ben's monthly salary? [Ans: $1050]

(b) What was Amy's monthly salary? [Ans: $1440]

Ben saved 3/7 of his salary every month and he spent the rest which amounted to $600.

Amy took 1 1/6 years less than Ben to save $12600.

(a) What was Ben's monthly salary? [Ans: $1050]

(b) What was Amy's monthly salary? [Ans: $1440]

## Monday, August 8, 2011

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