Multiple Choice QuestionsA school group charters three identical buses and occupies 
of the seats. After 
of the passengers leave, the remaining passengers use only two of the buses. The fraction of the seats on the two buses that are now occupied is
D.
Let the number of seats in each bus be 10.
According to the question,
Total seats in three buses = 10 x 3 = 30
Total passengers 
(1/4) of the passengers leave the bus.
Remaining passengers = 
∴ Required solution 
A and B invest in the ratio 3 : 5. After 6 months, C joins the business investing an amount equal to B's. At the end of the year what will be the ratio of their profits?
6 : 10 : 5
3 : 5 : 2
8 : 10 : 5
8 : 10 : 5
In a library the ratio of story books and other books is 7 : 2 and there are 1512 story books. Due to the collection of some more story books the said ratio becomes 15 : 4. The number of story books collected is
108
100
205
205
If the product of two positive numbers is 1575 and their ratio is 7 : 9, then the greater number is
45
35
135
135
The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12th person is 33 kg more than the average weight of all the 12 persons. The weight of the 12th person is
128.75 kg
128 kg
131 kg
131 kg
The average of the largest and smallest 3 digit numbers formed by 0, 2 and 4 would be
312
213
222
222
The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. The average of the remaining two numbers is
4.6
4.5
4.8
4.8
If the average of eight consecutive numbers be 93, then the greatest number among them is
100
86
102
102
If the arithmetic mean of 3a and 4b is greater than 50, and a is twice b, then the smallest possible integer value of a is
20
18
21
21
The average (arithmetic mean) of 330, 360 and 390 is
327 + 357 + 387
360
329+359+389
329+359+389
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