sstrike's answer to Cindy's Primary 6 Maths Data Analysis Singapore question.
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【excess / shortage】
diff.【each $】 btw 1 wing & nugget is $0.40+$0.30 = $0.70
13u+7(u+$0.70) = $14.90
$ → 1 nugget
u = ($14.9-7×$0.70)÷(13+7) = $0.50
Q ⇨
$14.90+$0.50+$0.30 = $15.70 (Ans)
diff.【each $】 btw 1 wing & nugget is $0.40+$0.30 = $0.70
13u+7(u+$0.70) = $14.90
$ → 1 nugget
u = ($14.9-7×$0.70)÷(13+7) = $0.50
Q ⇨
$14.90+$0.50+$0.30 = $15.70 (Ans)
Date Posted:
3 years ago
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