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primary 6 | Maths | Data Analysis
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Bernice
Bernice

primary 6 chevron_right Maths chevron_right Data analysis chevron_right Singapore

May I know how to do this question thks

Date Posted: 4 years ago
Views: 234
snell
Snell
4 years ago
1 plate + 1 bowl cost $12.80
so
5 plates + 5 bowls cost $12.80x5
= $64.00

sale
5 plates + 11 bowls cost $89.20

6 bowls cost 89.20-64 = $25.20
1 bowl costs $25.20 / 6 = $4.20
3 bowls cost $25.20 / 2 = $12.60

1 plate costs 12.80 - 4.20 = $8.60

2 plates + 3 bowls cost 8.6x2 + 12.6
= $29.80
Qi yuan
Qi Yuan
4 years ago
Wrong. You changed 12.60 to 12.80
J
J
4 years ago
Actually Snell's answer is correct. In fact your working in the answer you posted is incorrect as you wrote 12.60 instead of 12.80.

Always check your own working properly and carefully, and ensure it is absolutely correct, as well as confirm that the other's is incorrect before you comment and post your own answer.

When you don't and get corrected, it only makes you look silly and you end up embarrassing yourself.

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Qi yuan
Qi Yuan's answer
2 answers (A Helpful Person)
1st
The person who commented on your question got it wrong. This should be the correct answer
J
J
4 years ago
Check your working again. 1 plate and 1 bowl cost 12.80, not 12.60. (you actually wrote this correctly in the first step of your working)

Yet you mistakenly wrote 12.60 a few steps later and subtracted 4.20 from it, which is wrong as 12.60 is the cost of 3 bowls, not 1 plate and 1 bowl.