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Question
primary 5 | Maths
| Percentage
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How do I solve this?
Date Posted: 2 years ago
Views: 528
try using the guess and check method if rly unsure! (unless specified to use a certain % method then i can't help haha)
anyways, total (P+Y) = 77 balloons. consist of 35 purple, 42 yellow.
their difference is 7 which fits the question. 60% of 35 is 21, 50% of 42 is also 21. so there you go! how i started was to list out the multiples of 7 and just try.
anyways, total (P+Y) = 77 balloons. consist of 35 purple, 42 yellow.
their difference is 7 which fits the question. 60% of 35 is 21, 50% of 42 is also 21. so there you go! how i started was to list out the multiples of 7 and just try.
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done
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Guess and check also works, but using ratio can be more efficient. Hope this helps!
Date Posted:
2 years ago
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