EugeneC's answer to Ur mom's Primary 6 Maths Ratio Singapore question.
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S:T -> 1 : 3 -> 5 : 15
T:V -> 5 : 6 -> 15 : 18
Tom’s score remains the same so we have to make the units the same for an overall comparison.
S:T:V -> 5 : 15 : 18
S + V = 253
= 18units + 5 units
= 23 units
1 unit = 253 ÷ 23
= 11 marks
Tom’s score(15 units) = 11 x 15
= 165(answer)
T:V -> 5 : 6 -> 15 : 18
Tom’s score remains the same so we have to make the units the same for an overall comparison.
S:T:V -> 5 : 15 : 18
S + V = 253
= 18units + 5 units
= 23 units
1 unit = 253 ÷ 23
= 11 marks
Tom’s score(15 units) = 11 x 15
= 165(answer)
Date Posted:
3 years ago
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