EASY

Earn 100

What should come in place of the question mark (?) in the following questions?

$20 \times 168 \div 14 - 40 = ? + 110$

50% studentsanswered this correctly

Important Questions on Averages

MEDIUM

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

How many liters of water should be added to a

30 L

mixture of milk and water containing milk and water in the ratio

7 : 3

, such that the resultant mixture has

40 %

water in it?

HARD

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

There are three kinds of liquids $X, Y, Z$ . Three jars $J_{1}, J_{2}, J_{3}$ contain $100$ ml of liquids $X, Y, Z$ respectively. By an operation we mean three steps in the following order:

- stir the liquid in $J_{1}$ and transfer $10$ ml from $J_{1}$ into $J_{2};$

- stir the liquid in $J_{2}$ and transfer $10$ ml from $J_{2}$ into $J_{3};$

- stir the liquid in $J_{3}$ and transfer $10$ ml from $J_{3}$ into $J_{1};$

After performing the operation four times, let $x, y, z$ be the amounts of $X, Y, Z$ respectively in $J_{1}$ . Then

MEDIUM

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

18

litres of pure water was added to a vessel containing

80

litres of pure milk.

49

litres of the resultant mixture was then sold and some more quantity of pure milk and pure water was added to the vessel in the ratio of

2 : 1

. If the resultant ratio of milk and water in the vessel was

4 : 1

, what was the quantity of pure milk added in the vessel?

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

A mixture contains wine and water in the ratio

3 : 2

and another mixture contains them in the ratio

4 : 5

. How many litres of the latter must be mixed with

3

litres of the former so that the resultant mixture may contain equal quantities of wine and water?

MEDIUM

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

Jar A contains

" X "

ltr of pure milk only. A

27

ltr mixture of milk and water in the respective ratio of

4 : 5

is added to Jar A. The new mixture thus formed in Jar A contains

70 %

milk. What is the value of

X

MEDIUM

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

The ratio of milk to water is

5 : 4

. If two litres of water is added, the ratio becomes

10 : 9

, then find a new amount of water in the mixture.

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

What should come in place of question mark?

$\sqrt{16 \times 15 + 24 \times 12 + 97} = ?$

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

What should come in place of the question mark (?) in the following questions?

453 - 336 + 110 = ? + 31

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

In each of the following questions, what should come in the place of question mark (?) ?

876.23 + 729.49 = ?

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

What should come in place of the question mark (?) in the following questions?

1701 + 4011 - 3624 - 1113 = ?

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

What should come in place of the question mark (?) in the following questions?

\frac{?}{\sqrt{25}} = \frac{15 \times 4 - 40}{2}

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

What should come in place of the question mark (?) in the following questions?

97 + 710 - 143 = 4 \times ?

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

In each of the following questions, what should come in the place of question mark (?) ?

\frac{350 \times 25}{8 \times 2.5} = ?

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

What should come in place of the question mark (?) in the following questions?

25^{2.7} \times 5^{4.2} \div 5^{6.4} = 25^{(?)}

EASY

Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations