Level 3
Xavier gave 111 of his stamps to Joe, 211 of his stamps to Jason and 311 of his stamps to Kim. He then had 20 stamps left. How many stamps had he at first?
Level 2
Mr Smith saved a total of $8540 in 6 months. In the first 4 months, he saved $1210 each month. In the 5th month, he saved $1530. How much did he save in the 6th month?
Level 3
Mr Pang bought 26 baskets of durians. Each basket contained 48 durians. He sold 136 durians. Then he packed the remaining durians equally into 8 boxes. How many durians were there in each box?