Abbreviations used: eg P3, U1.1, Q1 refer to Conquer Problem Sums for Primary 3, unit 1.1, question 1.
P3, U11.2, Q5
Joel intended to cycle 640 km to raise funds for charity. He intends to cycle 40 km each day.
(a) What fraction of the journey would he have cycled by the end of the 3rd day?
(b) What fraction of the journey would he have left by the 7th day?
P4, U2.4, Q5
2/7 of a bag of balls were green in colour. 2/5 of the remaining balls were blue in colour and the rest were red in colour. If there were 12 more red balls than green balls, how many balls were there in the bag altogether?
P5, U2.1, Q5
Mr Lim gave 2/5 of his salary to his wife. Then he gave 1/3 of his remaining money to his 3 children equally and left the rest for himself. Given that he had left $1200 for himself, find Mr Lim's salary.
do not know how to do