1MA0 Foundation June 2012 Paper 1 Q15
15 The table shows the minimum distance and the maximum distance people should sit from different sized TV screens when watching TV.
| TV screen size (inches) | Minimum distance (feet) | Maximum distance (feet) |
|---|---|---|
| 28 | 3.5 | 7 |
| 30 | 3.75 | 7.5 |
| 32 | 4 | 8 |
| 36 | 4.5 | 9 |
| 38 | 4.75 | 9.5 |
| 40 | 5 | 10 |
| 42 | 5.25 | 10.5 |
James has a TV with a screen size of 32 inches.
He is going to watch his TV.
(a) What is the minimum distance James should sit from the screen?
feet (1)
feet (1)
Sheraz has a TV with a screen size of 38 inches.
He is going to watch his TV.
(b) Work out the difference between the minimum distance and the maximum distance Sheraz should sit from the screen.
feet (2)
feet (2)
You can use this rule to work out the maximum distance to sit from a TV screen.
Maximum distance in feet = screen size in inches \(\div\) 4
Clare has a TV with a screen size of 24 inches.
She is going to watch her TV.
(c) Use the rule to work out the maximum distance Clare should sit from the screen.
feet (1)
feet (1)
Richard should sit a maximum distance of 12 feet from his screen.
(d) Work out the screen size of Richard’s TV.
inches (2)
inches (2)
| Answer | Mark | Notes |
|---|---|---|
| 4 | 1 | B1 cao |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(9.5 - 4.75 =\) OR \(9.5 \div 2 =\) | 4.75 | 2 | M1 for \(9.5 - 4.75\) or \(9.5 \div 2\) or \(4.75 - 9.5\) A1 cao |
| Answer | Mark | Notes |
|---|---|---|
| 6 | 1 | B1 cao |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(12 \times 4 =\) | 48 | 2 | M1 for \(\times 4\) seen or identifying \(+ 0.5\) for every 2 inches or \(12 + 12 + 12 + 12\) oe or build up method eg 12, 24, 36, 48 allow one error A1 cao |