Page 57 - UKCAT 2017

D E
The second balloon took 120% of the time that the first balloon did.
The second balloon took 125% of the time that the first balloon did.
QR3-6 What is the decrease of temperature, correct to 2 decimal places, in wet air when measured in oF per mile?
A B C D E
2.49 oF per mile 4.98 oF per mile 6.30 oF per mile 16.13 oF per mile 29.95 oF per mile
Quantitative Reasoning
QR4 Concrete
The table gives information about the ratios, by volume, of material used to make types of concrete mix.
QR4-1 Which type of concrete mix contains the greatest proportion, by volume, of sand?
A General use
B Foundation C High Strength D Watertight E Rough
Type
Cement
Sand
Gravel
General use
1
2
4
Foundation
1
3
6
High Strength
2
2
3
Watertight
2
3
6
Rough
1
4
8
For example, rough concrete mix requires a ratio cement:sand:gravel of 1:4:8 by volume.
The mass of cement is 2,240 kg per m3. The mass of sand is 1,600 kg per m3. The mass of gravel is 1,680 kg per m3.
For all concrete mixes, water is added in the proportion 7 litres water for every 25 kg of cement to make concrete.
(The mass of 1 litre of water is 1 kg) (1000 litres = 1m3).
A B C D E
1.35m3 1.54m3 1.62m3 1.66m3 1.80m3
QR4-2 Jim is making general use concrete mix for a garage oor. The oor is rectangular, 9m by 4m and 15cm deep. How much sand in m3, correct to 2 decimal places, is required?
QR4-3 What is the ratio, by mass, of cement:gravel for general use
A 1:3
B 1:4
C 2:9
D 8:3
E 10:21
concrete mix?
UKCAT Of cial Guide 2017 57
PRACTICE QUESTIONS