Foundation June 2022 Paper 2R Q10
10 It takes a machine 8 seconds to produce a bolt.
Each day, the machine starts producing bolts at 09 30
The machine produces bolts continuously every 8 seconds until it stops at 16 10 on the same day.
Work out how many bolts the machine produces each day.
(4)
| Scheme | Marks |
|---|---|
| 6 hrs 40 mins or \(6\dfrac{2}{3}\) or \(\dfrac{20}{3}\) or 400 mins | B1 |
e.g. (6 × 60 + 40) × 60 (= 24 000) oe or “their 400” × 60 (= 24 000) oe or \(\dfrac{60}{8}\) (= 7.5) oe or \(\dfrac{60 \times 60}{8}\) (= 450) oe or 7.5 × 60 (= 450) oe | M1 |
e.g. “24 000” ÷ 8 oe or “their 400” × “7.5” oe or “their \(6\dfrac{2}{3}\)” × “450” oe | M1 |
| 3000 | A1 |
| (4) | |
| (4 marks) |
Notes
M1: for converting their time difference into seconds or finding the number of bolts produced in 1 minute oe or finding the number of bolts produced in one hour oe
M1: for a complete method to find how many bolts are produced