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primary 6 | Maths
| Measurement
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Date Posted: 1 year ago
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Let’s assume that all 60 is mangos.
If 1 mango is exchanged for 3 pears, this means that there will be 60x3=180 pears.
However, the number of actual pears is only 116. Meaning that there is a difference of 180-116=64 pears.
So how do you solve for the number of pears from this? There is actually a pattern.
Now let’s assume that there is 59 mangos and 1 pear. Exchanging each mango for 3 pears, 59x3=177, plus 1 pear = 178pears in total.
Notice that
60 mango, 0 pear= 180 pear
59 mango, 1 pear = 178 pear
58 mango, 2 pear = 176 pear
There is a decrease in 2 pear as the number of mangos decrease from 60.
So going back to when we assumed there is 60 mangos and 0 pears, where total number of pears is 180, the difference in assumed pears and actual pears is 180-116=64
As for every pear there is, difference decreases by 2, we hence take 64 divide 2 which gives as 32 pears
If you aren’t able to understand use this example:
60 mango, 0 pear= 180 pear
58 mango, 2 pear = 176 pear
Difference is 4 pears, 4 divide 2 is 2 pears
If 1 mango is exchanged for 3 pears, this means that there will be 60x3=180 pears.
However, the number of actual pears is only 116. Meaning that there is a difference of 180-116=64 pears.
So how do you solve for the number of pears from this? There is actually a pattern.
Now let’s assume that there is 59 mangos and 1 pear. Exchanging each mango for 3 pears, 59x3=177, plus 1 pear = 178pears in total.
Notice that
60 mango, 0 pear= 180 pear
59 mango, 1 pear = 178 pear
58 mango, 2 pear = 176 pear
There is a decrease in 2 pear as the number of mangos decrease from 60.
So going back to when we assumed there is 60 mangos and 0 pears, where total number of pears is 180, the difference in assumed pears and actual pears is 180-116=64
As for every pear there is, difference decreases by 2, we hence take 64 divide 2 which gives as 32 pears
If you aren’t able to understand use this example:
60 mango, 0 pear= 180 pear
58 mango, 2 pear = 176 pear
Difference is 4 pears, 4 divide 2 is 2 pears
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