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Question
primary 5 | Maths
| Rate & Ratio
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Date Posted: 4 years ago
Views: 326
There is an error in your question. It should be 2/7 of the fruits are pears and the rest are oranges.
At first,
oranges : pears : total = 5 : 2 : 7
In the end ,
oranges : pears : total = 10 : 11 : 21
Since the number of oranges sold equals the number of pears bought, the total number of fruits remains the same.
So we make the total number of units the same.
Multiply by 3,
At first,
oranges : pears : total = 15 : 6 : 21
Compare the two ratios,
Number of units of oranges sold = 15 - 10 = 5
Fraction that were sold
= 5/15
= ⅓
At first,
oranges : pears : total = 5 : 2 : 7
In the end ,
oranges : pears : total = 10 : 11 : 21
Since the number of oranges sold equals the number of pears bought, the total number of fruits remains the same.
So we make the total number of units the same.
Multiply by 3,
At first,
oranges : pears : total = 15 : 6 : 21
Compare the two ratios,
Number of units of oranges sold = 15 - 10 = 5
Fraction that were sold
= 5/15
= ⅓
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