2017 Psle Math Questions And Answers Direct

After turning off C, rate of A + B = ( \frac{1}{6} + \frac{1}{4} = \frac{4}{24} + \frac{6}{24} = \frac{10}{24} = \frac{5}{12} ) tank/hour.

Ribbon used for small boxes: ( 0.8 \times S ) metres. Ribbon used for large boxes: ( 1.2 \times (S + 3) ) metres. 2017 psle math questions and answers

In 2 hours: ( 2 \times \frac{7}{24} = \frac{14}{24} = \frac{7}{12} ) tank filled. After turning off C, rate of A +