1.Shop A sells a cup for $x and a plate for $y. If Mr Chan pays $150 to buy 4 cups and 8 plates, express the change in terms of x and y.
2.Mary bought a book and read 3/8 on the first day. On the second day, she read 1/3 of the REST and 30 pages remained finally. How many pages are there in the book?
3.1,3,4,7,11,_,_,_
4.0,1/2,2/3,3/4,4/5
5.分數:6/11轉百分數和小數(小數後2位)
6.黃先生以$500買橙20打,以每個$3.5售出80个,再以每个$1售出餘下的橙,求虧蝕百分率。
7.If the distance between M(2a+1,1) and N(5-3a,1)is 7 units, find the possible values of a.
8.Find two consecutive integers such that 3/5 of the larger number exceeds 1/4 of the smaller one by 5又1/2.
9.Sam pays $154 for 2 T-shirts and 4 pairs of socks . If the price of each pair of socks is 1/5 of each T-shirts ,find the price of a T-shirts.
10.The number of rotten apples is 3/14 of the total number of apples. If 4 more rotten apples are added, the number of rotten apples will be 1/4 of the total number of apples.How many apples are there originally?
