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primary 5 | Maths
| Percentage
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Hello all, apart from guess and check, is there any better method to solve this problem? Thank you in advance!
Date Posted: 4 years ago
Views: 482
Can use
Let number of people = u
3u + 42 = 8u - 47
5u = 89
1u = 89/5
But the answer for this question no valid. Question wrong.... ;(
Let number of people = u
3u + 42 = 8u - 47
5u = 89
1u = 89/5
But the answer for this question no valid. Question wrong.... ;(
Because he hands out 5 more pencils to each pupil, the situation goes from 42 pencils extra to 47 pencils not enough. This is a difference of 89 pencils in quantity.
The extra 89 pencils decide how many students there are in the class.
Number of students = 89/5
= “17.8”
Other than the fact that the question seems flawed, this is the technique to solve such questions.
The extra 89 pencils decide how many students there are in the class.
Number of students = 89/5
= “17.8”
Other than the fact that the question seems flawed, this is the technique to solve such questions.
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