21 Banana trees, 42 apple trees and 56
guava trees have to be planted in rows such
that each row contains the same number
of trees of one variety only. Minimum
number of rows in which the above trees
may be planted is –

A container of milk was
$4\over5$
th full. When 12
bottles of milk were taken out and 8 bottles
of milk were poured into it, vessel was
$3\over4$
th
full. How many bottles of milk can the
container contain ?

The average of 8 numbers is 20.
The
average of first two number is 15$1\over2$
and that
of the next three is 21
$1\over3$
. If the sixth be
less than the seventh and eighth numbers
by 4 and 7 respectively, then the eight
number is

A contractor employed 25 labourers on a job.
He was paid ` 275 for the work. After
keeping 20% of this sum, he distributed the
remaining amount amongst the labourers.
If the number of men to women labourers
was in the ratio 2 : 3 and their wages is in
the ratio 5 : 4. What wages did a woman
labourer get ?

A container contains of a litre mixture of
milk and water, the milk being x litre. If
from this container, ylitres of mixtures is
taken out and replaced by water, then the
water in the container will be –

Two numbers are in the ratio 1$1\over2$
: 2
$2\over3$
.
When each of those number is increased
by 15, they become in the ratio 1
$2\over3$
: 2
$1\over2$
.
The greater of the number is –

In an election between two candidates, 75%
of the voters cast their votes, out of which
2% votes were declared invalid. A candidate
got 9261 votes which were 75% of the valid
votes. The total number of voters who cast
their votes was –

A grocer buys 160 kg of rice at ` 27 per kg
and mixes it with 240 kg of rice available
at ` 32 per kg. At what rate per kg should
he sell the mixture to gain 20% on the
whole ?

The profit earned after selling an article for
` 650 is same as the loss incurred after
selling the article for ` 426. Find the half of
the 50% of the cost price