Potatoo's answer to Lim's Secondary 2 Maths Singapore question.
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1 unit = $70/(3+5+x) = 70/(8+x)
Sally has $10 more than Raymond..
5[70/(8+x)] - 3[70/(8+x)] = 10
350/(8+x) - 210/(8+x) = 10
350-210 = 10(8+x)
140 = 80+10x
10x = 60
x = 6(ans)
Sally has $10 more than Raymond..
5[70/(8+x)] - 3[70/(8+x)] = 10
350/(8+x) - 210/(8+x) = 10
350-210 = 10(8+x)
140 = 80+10x
10x = 60
x = 6(ans)
Date Posted:
3 years ago
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