Shawn's answer to Saanvi's Primary 4 Maths Singapore question.
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Let number of days be y.
9 x y = total number of pages
(6 x y) + 21 = total number of pages
So
9y = 6y + 21
3y = 21
y = 7
Number of days = 7
Number of pages = 9y = 9 x 7 = 63
9 x y = total number of pages
(6 x y) + 21 = total number of pages
So
9y = 6y + 21
3y = 21
y = 7
Number of days = 7
Number of pages = 9y = 9 x 7 = 63
Date Posted:
3 years ago
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