First
Cindy folded 226 fewer paper stars than Farah. When Cindy gave Farah 25 of her paper stars, the ratio of Cindy's paper stars to Farah's paper stars became 1 : 5.
Cindy folded 226 fewer paper stars than Farah. When Cindy gave Farah 25 of her paper stars, the ratio of Cindy's paper stars to Farah's paper stars became 1 : 5.
a) How many stars did Cindy folded at first?
b) How many paper stars did Farah have in the end?
b) How many paper stars did Farah have in the end?
(After)
Farah = 5u
Cindy = 1u
New Difference = Old Difference + Double Change (Small to Big)
Difference = 4u
4u = 226 + 2 × 25 = 226 + 50 = 276
Farah = 5u = 276 ÷ 4 × 5 = 69 × 5 = 345
Farah = 5u
Cindy = 1u
New Difference = Old Difference + Double Change (Small to Big)
Difference = 4u
4u = 226 + 2 × 25 = 226 + 50 = 276
Farah = 5u = 276 ÷ 4 × 5 = 69 × 5 = 345
Cindy (Before) = 1u + 25 = 69 + 25 = 94
Second
A group of pupils took a test. The number of pupils who passed was 146 more than the number of pupils who failed. If 18 more pupils had passed the test, the number of pupils who passed will be 3 times the number of pupils who failed. Find the total number of pupils who took the test.
(After)
Passed : Failed
= 3 : 1
New Difference = Old Difference + Double Change
Difference = 3 -1 = 2 units
2 units = 146 + 2 × 18 = 182
Total = 4 units = 364
Second
A group of pupils took a test. The number of pupils who passed was 146 more than the number of pupils who failed. If 18 more pupils had passed the test, the number of pupils who passed will be 3 times the number of pupils who failed. Find the total number of pupils who took the test.
(After)
Passed : Failed
= 3 : 1
New Difference = Old Difference + Double Change
Difference = 3 -1 = 2 units
2 units = 146 + 2 × 18 = 182
Total = 4 units = 364
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