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In a shopping mallpromotion every 30th shopper gets a$10 voucher and every 120th shopper gets a free meal.How many shoppers must enter the mall before one receives both a voucher and a free meal?
某购物中心举办促销活动：每第30位顾客可获一张10美元的代金券，每第120位顾客可获一顿免费餐。需要有多少位顾客进入该购物中心，才会有一位顾客同时获得代金券和免费餐？
(IG)(CE)
Amanda has 40 pieces of fruit and 100 sweets to share with the students in her class.She is able to give each student an equal number of pieces of fruit and an equal number of sweets.What is the largest possible number of students in her class?
阿曼达有40个水果和100块糖果要分给班上的同学们。她能给每个同学分到同样数量的水果和同样数量的糖果。她班上最多能有多少名同学？
(IG)(CE)
Sam has sheets of green and yellow plastic that he wants to use to make a square chequerboard pattern on a coffee-table top.Each sheet measures 210cm by 154 cm.The squares are to be the maximum size possible.What will be the length of the side of each square and how many willhe be able to cut from each sheet?
山姆有几张绿色和黄色的塑料板，他想用这些塑料板在咖啡桌桌面上制作一个方格棋盘图案。每张塑料板的尺寸为210厘米×154厘米。每个方格的尺寸应尽可能大。每个方格的边长是多少？他能从每张塑料板上裁出多少个方格？
(IG)(CE)
Amira has two rolls of cotton fabric.One roll has 72 metres on it and the other has 90 metres on it.She wants to cut the fabric to make as many equal length pieces as possible of the longest possible length.How long should each piece be?
Amira有两卷棉布。一卷长72米，另一卷长90米。她想将布料裁剪成尽可能多的等长布条，且每条的长度尽可能长。每条布条应该有多长？