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Percentage (Pri-6)

/ Percentage Kong Hwa School / Others (2018)
The number of children in a town decreased to 8827. The number of *****s increased by 42% to 15 194. The total number of people decreased by 269 (a) What was the increase in the number of *****s? (b) What was the percentage decrease in the total number of children? Round off your answer to one decimal place.
Ma

September 5, 2018
 
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Answer 1 Comments 1
Sep 5, 2018 05:38 AM
GUIDE: draw a bar model to show increase (adult) & decrease (children) then solve for increase in A. Then use 269 in the model to find decrease in C. Then solve.

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(100% + 42%) x A = 15194A = 15194 × 100142 = 10700---Increase in A (shaded) = 15194 - 10700= 4494   (ans, a)---Decrease in C = 269 + 4494= 4763% of decrease in C = Decrease in CTotal C = 47634763 + 8827 × 100%= 35.1%  (ans, b)
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Comments 1
Sep 5, 2018 05:34 AM
The changes all happened on the left side of the model
September 5, 2018
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