17.5 cm rain was recorded at Islamabad in a week, the average rain per day is
0.5cm
1.5cm
2.5cm
3.5cm
212.
Waleed scored 124, 15, 112, 30, 49 runs in five innings, the aver runs per inning is
65
66
67
68
213.
Which of them is quantity that represents the given quantities?
average
ratio
proportion
none
214.
The ratio of the age of a man and his wife is 4: 3. After 4 years this ratio will be 9: 7. If at the time of the marriage, the ratio was 5:3, then how many years ago they were married?
12 years
8 years
10 years
15 years
215.
If 5a+3b/ 2a-3b =23/5 then the value of a: b is
2:1
1:4
1:2
4:1
216.
If a: b=2: 5, then the value of (2a+3b): (7a + 5b) is
19/39
99/13
31/19
19/31
217.
If an alloy contains copper and silver in the ratio 3: 7, then the percentage quantity of silver in the alloy is
90%
70%
60%
50%
218.
. A mixture contains alcohol and water in the ratio of 12: 5. On adding 14 liters of water, the ratio of alcohol to water becomes 4: 3. The quantity of alcohol in the mixture is
18 liters
24 liters
26 liters
none of these
219.
When x is added to each term of 7: 13 the ratio becomes 2:3. The value of x is
7
11
5
none of these
220.
The ratio of boys and girls in a school is 9: 5. If the total number of students in the school is 1050, then the number of boys is