2.Company A has been in business for 10 years longer than its rival, company B, but 2 years ago company B had been in business for only half as long as company A at that time. In 3 years time, the number of years that company B will have been business for will be?
3.A nursery sells large pots for $25 and smell pots for $15. Total sales of pots came $490 one weekend when customers bought 3 times as many small pots as big pots. The total number of pots sold on the weekend was?
4.A balloon inflates at a constant rate of 250 cubic centimeters per second and is fully inflates after 12 seconds. The volume of the balloon in cubic centimeters when it is 60% inflated is?
5.A share trades on a Monday for $20. One that day Alex sells 35 such shares and spends the entire proceeds purchasing beer at cost of $2.50 per can. The number of cans that Alex purchased was?
6.A sales representative, having found himself lost in a country town, asks at the local service station how far it is to main highway. The response is that the representative is 30% further away than he would be if he had travelled another 24km towards the highway.
7.A swimming pool has developed a leak and is losing water at the constant rate of 28 litres per minutes. After 20 minute of leaking, the pool is at 90% of full capacity. How much water will be in the pool when it is at 70% of full capacity?
8.A football stadium contains 80% of its full capacity of spectators for grand final. At the end of the game, spectators leave the ground through the various exits at the rate of 10 spectators per second. After 40 minutes the stadium contains 60% of its full capacity of spectators.
(A)What is the full capacity of the stadium?
(B)How many spectators will be in the stadium 50 minutes after the end of the game?
更新1:
譯到幾多得幾多喇