~ CA Practice 1~

You MUST be able to solve these "common" questions by now.





1)  3 times of a number is more than 3/4 of the number by 126.
     Find the number.  Ans: 56


2) Darren had 49 paper clips and Shay Liang had 644 paper clips. After their mother gave them each an equal numbenr of paper clips, Darren had 1/8 as many paper clips as Shay Liang.
How many paper clips did their mother give each of them?
Ans: 36


3) Mrs Yeo bought some identical dresses for $480. If she bought them at the Great Singapore Sales, she could buy them at a discount of 25%. With the amount saved, she could then buy 2 more of such dresses at the discounted price. How much did Mrs Yeo pay for each dress. Ans: $80



4)

Ans: 56 cubes

Ans: 4.8min

6) Andrea has 3 tanks, A, B and C. Tank A is completely filled with water and Tank B is half-filled with water. There is no water in Tank C. She poured 7/8 of the water from Tank A and all the water from Tank B into Tank C.

How much more water does Andrea have to pour into Tank C so that the water level in Tank C is 3cm from the top of the tank? Give your answer in litres.

Ans: 24.39L

Ans: 2700 cm3