Higher November 2018 Paper 1 Q4
4 It would take 120 minutes to fill a swimming pool using water from 5 taps.
(a) How many minutes will it take to fill the pool if only 3 of the taps are used? (2)
(b) State one assumption you made in working out your answer to part (a). (1)
| Answer | Mark | Mark scheme |
|---|---|---|
| 200 | M1 | for \(120 \times 5 \div 3\) oe |
| A1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| statement | C1 | Statement that each tap fills at the same rate or that the rate does not change over time Examples Acceptable responses: Taps are running at the same speed They (clearly referring to taps) all fill the pool with the same volume of water The amount of water is the same in the same time (again referring to taps) Each tap is doing a fifth of the filling That all taps take equal time to fill the pool All taps produce the same amount of water That the water flow stays at the same rate over the whole time. Non acceptable responses It will take more time because there are less taps The less taps used the longer it takes to fill the pool That 1 tap can take up to 24 mins each 3 taps will take longer to fill the pool |
Additional guidance
Any statement referring to the same amount of water flowing from each tap is acceptable.