51 P5.RD.JM.17083210
Level 3
Madam Naz made pies for sale. 45% of the pies were chicken pies and the rest were potato and sardine pies in the ratio 3 : 1. If a customer bought 75% of the chicken pies and all of the sardine pies, what percentage of the potato pies must Madam Naz sell for her to maintain the original percentage of chicken pies at first? Leave your answer in mixed numbers.
5 m
Mixed numbers D Division Ratio to units Percent of a set Percent to units Percent of different bases All change Units table Decimal units
52 P5.PC.JM.17083151
Level 3
At first, the ratio of the number of boys to the number of girls at a school playground was 2 : 5. When 48 girls and some boys entered the playground, the number of girls increased by 12% and the total number of children at the playground increased by 20%.
  1. How many boys were there at first?
  2. What percentage of the children at the playground were boys in the end? Express your answer as a mixed number.
5 m
Finding percent Percent of a set Percent change by Percent of different bases Mixed numbers Ratio to units All change Decimal units

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