Math topic中文

Compare by percentage

comparing two quantities by percentage

Practice questions

  1. 1Hamid borrowed a sum of money for 3 years at an interest rate of 3.5% per annum simple interest to pay for his car. If t…
  2. 2y is inversely proportional to the square of x, x>0x > 0. If x is increased by 25%, find the percentage change in y. Answ…
  3. 3The force, F units, between two objects is inversely proportional to the square of the distance, d units, between them.…
  4. 4Mrs Boey deposited $20 000 in a bank that pays 0.8% per annum compound interest compounded half-yearly. Find the total…
  5. 5校园里有杨树50棵，柳树80棵，杨树棵树比柳树少百分之多少？柳树棵树比杨树多百分之多少？
  6. 6A group of students sat for an examination. 50% of the boys and 40% of the girls passed the examination. Megan commented…
  7. 7一所学校男学生与女学生的比是4：5，女学生比男学生人数多 %．
  8. 8Mrs Boey deposited $20000\char36{}20 000 in a bank that pays 0.8% per annum compound interest compounded half-yearly. Find the tota…
  9. 9John owns a cleaning company that cleans office blocks. The number of employees in his company and their salaries in 202…
  10. 10The table below shows part of Ahmad's personal income tax bill. Calculate the values of p and q. Answer p = ... q = ...…
  11. 11A company divided a bonus among its employees A, B, and C in the ratio 2 : 3 : 7. C's bonus was X% more than the combine…
  12. 12A book writer intends to sell her books to either Australia or Brazil, and she is planning to use Singapore post office…
  13. 13PP is inversely proportional to Q3Q^3. Find the percentage change in PP when QQ is reduced by 20%. Answer ...%
  14. 14The cash price of a washing machine is $840. If paid by hire purchase scheme, the deposit is 15% of the cash price and…
  15. 15筑路队修筑一条公路，共用了1.2亿元，比计划节省了0.3亿元，节省了 %．
  16. 16学校计划投资60万元在学校修建塑胶跑道，实际用75万，比计划增加了百分之几？
  17. 17A sheet of rectangular paper has length ll cm and breadth bb cm. If identical squares of side 3 cm are to be cut out f…
  18. 18王奶奶买鸡蛋，第二周比第一周涨价5％5％，第三周比第二周涨价3％3％，第二周和第三周一共涨价百分之几??
  19. 19xx and yy are related such that xx is inversely proportional to the square of yy. If yy is increased by 400%, find…
  20. 20The table shows the total electricity consumption in Singapore over three years. In 2021, the electricity consumed by ho…
  21. 21某商家将一种商品按进价提高25％25％后定价，然后打出“九折酬宾，结果每件商品获利208208元． (1)求每件商品的进价； (2)另有一家商家出售同类产品，按进价提高40％40％，然后打出“八折酬宾”的广告，如果你想买这种产品，应选…
  22. 22The cash price of a gaming device is $710. Jolene buys this gaming device on hire purchase and pays a 30% deposit. The…
  23. 23“实际产量是计划的115%，是 与 相比较，实际比计划增产 %．
  24. 24在含盐率为 10% 的盐水中加入 10 克盐和 10 克水，含盐率（ ）。 A. 提高了 B. 降低了 C. 没有改变
  25. 25It is given that y is inversely proportional to the square root of x. Find the percentage change in x when the value of…
  26. 262020比1616多___％％，1616比2020少___％.％.
  27. 27一件商品，先打八折，后又涨价20%，现价与原价相比，（ ） A. 不变 B. 降低了 C. 提高了
  28. 28甲数是88，乙数是55，算式(8−5)÷5=60％(8-5)÷5=60％表示 ___ .
  29. 29Jim, his wife and their child visited Hokkaido, Japan. The tables below give information that can be used to work out so…
  30. 30Javier and Stella are planning their exercise routines. Javier and Stella have a body mass of 70 kg and 60 kg respective…
  31. 31一种商品的价格先提价30%后，再打7折出售，现在售价是原价的（ ） A. 70% B. 100% C. 109% D. 91%
  32. 32The intensity of a sound detected by a receiver is inversely proportional to the square of the distance of the receiver…
  33. 33Matthew invests $20 000 into a fixed deposit at r%r\% per month, compounded monthly. After 24 months he will be able to…
  34. 34某粮食生产专业户，去年产小麦80吨，今年产小麦110吨，今年比去年增产百分之几？
  35. 35The diagram shows two geometrically similar cup and saucer sets. The diameter of the smaller saucer is 5 cm. The diamete…
  36. 36一批商品，按期望获得50%的利润来定价．结果只销售掉70%的商品，为了尽早销售掉剩下的商品，商店决定按定价打八折出售．这样所获得的全部利润是原来所期望的利润的百分之 ___ ．
  37. 37一种商品打七折出售，就是说现在的售价（ ） A. 比原价降低70% B. 是原价的30% C. 是原价的70%
  38. 3850比40多25%，40比50少（ ） A. 10% B. 20% C. 25%
  39. 39在“绿色造林”活动中，计划投入1.6万元，实际投入2万元．计划投入比实际少百分之几？
  40. 40定价100元的商品，先提价20%，再降价20%，还是原价。（ ）
  41. 41Zhao and Mei are planning their exercise routines. They record their body weights and speeds for walking and jogging. In…
  42. 42Julian owns a fruit stall selling fruit juice. The tables below give information related to Julian's stall. (a) Calculat…
  43. 43The diagram below shows the menu from a fast food restaurant. Albert wants to buy a burger for both himself and his brot…
  44. 44Karen is selling pancakes for a one-day charity event. She specialises in three different types of pancakes which are pl…
  45. 45今年元旦期间，天荣小区里挂满了气球。其中蓝气球有120120个，黄气球有8080个。蓝气球的个数比黄气球多百分之几？
  46. 46Adam invested $P in a savings account X with interest compounded quarterly at the rate of 1.5%1.5\% per annum. Ben invest…
  47. 47在100克水中放入25克糖，糖占糖水的25%。
  48. 48A children indoor playground can accommodate 160 people in a session. Ticket price for an accompanying adult and a child…
  49. 49甲数的60%一定大于乙数的30%． ．（判断对错）