1MA0 Foundation November 2015 Paper 2 Q24
24 Celina and Zoe both sing in a band.
One evening the band plays for 80 minutes.
Celina sings for 65% of the 80 minutes.
Zoe sings for \(\dfrac{5}{8}\) of the 80 minutes.
Celina sings for more minutes than Zoe sings.
Work out for how many more minutes.
You must show all your working. (4)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(0.65 \times 80 = 52\) \(\dfrac{5}{8} \times 80 = 50\) \(\dfrac{5}{8} = 0.625\), 62.5% \(0.65 - 0.625 = 0.025\) \(0.025 \times 80\) | 2 | 4 | M1 for method to calculate the time Celina sings M1 for method to calculate the time Zoe sings M1 (dep on at least M1) for finding the difference between two times A1 cao Or M1 for a conversion to all decimals, fractions or percentages M1 for finding their difference in their chosen system M1 (dep on at least M1) for using their proportional difference multiplied by 80 A1 cao |