Level 3
There is an equal number of 50-cent coins and 10-cent coins in a box. The total value of the 10-cent coins is $6.80 less than the total value of the 50-cent coins.
Level 3 At the supermarket, passion fruits were sold at 3 for $3.10 and pears were sold at 4 for $4.70. What was the total amount of money that Mrs Ang had to pay if she bought 15 such passion fruits and 8 such pears?
Level 3
The number of silver crayons is twice the number of blue crayons. The number of blue crayons is 14 more than the number of gold crayons. The total number of crayons is 138. The cost of each silver crayon is $3.80 and the cost of each gold crayon is $1.50. The total cost of all the crayons is $374.20.
Level 3
Mr Ho wants to buy the same type of files. If he buys 6 files, he will have $3 left. If he buys 8 files, he will be short of $5.50. How much do 6 files cost?
Level 3
Marnie wants to buy some files of the same price. If she buys 6 files, she will have $7.20 left. If she buys 10 files, she will have no money left.
