4MA0 Higher June 2016 Paper 3R Q3
3 There are 50 marbles in a bag.
35 of the marbles are brown.
Otti takes at random a marble from the bag.
He records the colour of the marble and puts the marble back in the bag.
He does this 300 times.
Work out an estimate for the number of brown marbles he takes.
(2)
| Scheme | Marks |
|---|---|
| \(\dfrac{35}{50} \times 300\) oe, eg 35 × 6, 0.7 × 300, etc | M1 |
| 210 | A1 |
| (2) |
Notes
M1: A fully correct method
A1: cao (award \(\dfrac{210}{300}\) M1 only)