Lim Wei Lin's answer to Sid's Primary 6 Maths Algebra Singapore question.
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(a)
Benny + Clara = $60n
4U (Benny) + 1U (Clara) = $60n
5U = 60n
1U = 60n ÷ 5 = 12n
Benny (4U) = 12n x 4 = 48n
⅓ x 48n = 16n
$48n - $16n = $32n
(b)
Sub n = 2.25,
16n = 16(2.25) = $36
Benny + Clara = $60n
4U (Benny) + 1U (Clara) = $60n
5U = 60n
1U = 60n ÷ 5 = 12n
Benny (4U) = 12n x 4 = 48n
⅓ x 48n = 16n
$48n - $16n = $32n
(b)
Sub n = 2.25,
16n = 16(2.25) = $36
Date Posted:
2 years ago
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