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primary 6 | Maths
| Percentage
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Date Posted: 4 years ago
Views: 360
Assume the fruits consist of only oranges and grapes.
“There were 20% more oranges than grapes”
Assume that there are 100 units of grapes. Then there would be 120 units of oranges.
A 10% increase in oranges means an increase in 12 units of oranges, so that there are now 132 units of oranges.
A 9% increase in grapes means an increase in 9 units of grapes, so that there are now 109 units of grapes.
Remember that in this case, 1 unit of oranges have the same value as 1 unit of grapes.
There is a total of 21 units increase in fruits altogether, which corresponds to 126 fruits added.
There were initially 220 units of fruits.
21 units —> 126
1 unit —> 6
220 units —> 1320
So there were 1320 fruits at first.
“There were 20% more oranges than grapes”
Assume that there are 100 units of grapes. Then there would be 120 units of oranges.
A 10% increase in oranges means an increase in 12 units of oranges, so that there are now 132 units of oranges.
A 9% increase in grapes means an increase in 9 units of grapes, so that there are now 109 units of grapes.
Remember that in this case, 1 unit of oranges have the same value as 1 unit of grapes.
There is a total of 21 units increase in fruits altogether, which corresponds to 126 fruits added.
There were initially 220 units of fruits.
21 units —> 126
1 unit —> 6
220 units —> 1320
So there were 1320 fruits at first.
See 1 Answer
done
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clear
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using algebra
Date Posted:
4 years ago
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