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primary 6 | Maths | Data Analysis
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Nicole
Nicole

primary 6 chevron_right Maths chevron_right Data analysis chevron_right Singapore

May I know any other method to do this question? Thank you.

Date Posted: 4 years ago
Views: 454
AC Lim
AC Lim
4 years ago
Yes, Use assumption method.
Tips for your PSLE. Assumption method always link with Guess and Check method. If you think question can be solved by Guess and Check method, normally can solve by using assumption method. Hope this helps.
Nicole
Nicole
4 years ago
Thank you very much.
AC Lim
AC Lim
4 years ago
I show working later...
Nicole
Nicole
4 years ago
Sure, thank you.

See 1 Answer

Assumed all the money from boy.
Total money 250×69.88=17470
250×55=13750 …boy average is 55
17470-13750=3720
Average different for boy and girl = 85-55 =30
Therefore, number of girl= 3720÷30= 124 girls.
Hope this helps.
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AC Lim
Ac Lim's answer
12074 answers (A Helpful Person)
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AC Lim
AC Lim
4 years ago
The rest follow your calculation
10540-6930 = 3610.
Nicole
Nicole
4 years ago
Thank you.