BRAIN STORMING MATHS FOR DIFFERENT COMPETITIVE EXAMS (SBI ,IBPS ,GRE,BANK PO EXAM)

                                                         

                             Ratio and Proportion

1. The weight of a circular disc varies as the square of the

radius when the thickness remains the same. It also varies as

the thickness when the radius remains the same. Two discs

have their thickness in the ratio of 32 : 9, find the ratio of their

radii if the weight of the first is half that of the second.

2. When a body falls from rest its distance from the starting

point varies as the square of the time it has been falling. If a

body falls through 122.60 m in 5 sec, how far does it fall in 10

sec?

3. The ratio of annual income, savings and expenditure of

Ramesh and Suresh are 7:5, 11:9 and 3:2 respectively. If the

combined saving per year of both is Rs 10000, find the annual

income of Ramesh.

4. The duration of a railway journey varies directly as the distance

and inversely as the velocity. The velocity varies directly

as the square root of the quantity of coal used per km

and inversely as the number of carriages in the train. In a

journey of 50 km in half an hour with 18 carriages 100 kg of

coal is required. How much coal will be consumed in a journey

of 42 km in 5.6 minutes with 16 carriages?

5. In a certain examination, the number of candidates who passed

was four times the number of those who failed. If there had

been 35 fewer candidates and 9 more had failed, the ratio of

passed candidates to failed candidates would have become

2:1. Determine the total number of candidates.

6. Dash and Raju earn in the ratio of 5 : 2. They spend in the

ratio of 3 : 1 and save in the ratio of 2 : 1. Find the monthly

income of each if the total yearly savings of both Dash and

Raju together is Rs 108,000.

7. Cost of diamond varies as the square of its weight. A diamond

broke into four pieces with their weights in the ratio of

1 : 3 : 4 : 5. What is the price of the original diamond if the loss

in the total value of the diamond amounts to Rs 118,000?

8. The duration of a railway journey varies directly as the distance

and inversely as the speed. The speed varies directly

as the square root of the quantity of coal used per km, and

inversely as the number of carriages in the train. In a journey

of 50 km in half an hour with 18 carriages, 100 kg of coal is

required. How much coal will be consumed in a journey of 42

km in 5.6 minutes with 16 carriages?

9. If in an election in which each elector may vote for two candidates,

half of the voters vote for A and divide their second

votes among B, C and D in the ratio 3 : 2: 1; of the remainder,

half vote for B and divide their second votes between C and

D, in the ratio of 2 : 1; of the remainder, half vote for C and D.

Finally, 840 votes was not given to any candidate. How many

votes does each candidate get?

10. Children, women and men were employed in the ratio of 1:2:3

for doing a job. Their wages were fixed in the ratio of 4:5:6. If

the number of men employed is 30 and total daily wages paid

to all is Rs 4000, find the daily wages of a child, a woman and

a man

DIFFICULT WORDS MEANING AND ANSWER OF CLOSE TEST

                                                   





                                                 MEANINGS OF DIFFICULT WORDS
  



Unruly = not easy to control or manage 

Marshy = wet and muddy

Inhospitable = not giving a friendly or polite
welcome to guests

Susceptible = easily influenced or harmed by
something; sensitive


Exorbitant = much too high or great;

Scant = hardly enough; not very much


Primitive = of or at an early stage of social development




                                     ANSWER OF CLOSE TEST

1. 1          2. 3      3. 2       4. 2     5. 4


6. 5          7. 3      8. 5       9. 4    10. 2

CLOSE TEST

                                                        CLOSE TEST

A good percentage of the population of India is
tribal. The tribals live in the hills and forests of the
country and have been little  (1)  by the   (2)  currents of
the plains. Practically all the states of India have their
tribal population. The tribes are numerous, computed
to be about 200, some living in  (3)  regions in dense
forests, and others on the borders of villages. Some
tribes are  (4)  to a few souls, while others like the
Santhals, run into millions and are steadily  (5)  in
numbers. During the British period some of them were
known as ‘criminal tribes’ for they showed (6) respect
for the Indian Penal Code. After independence they
have been named Scheduled Tribes. Under modern
conditions isolation, however, has become  (7)  and the
hill tribes are getting  (8) . The cultural traffic is twoway.
Social reformers are taking civilization to the
hills, and the tribes,  (9)  their old occupations of
hunting and  (10)  farming, are settling in villages,
towns and cities as labourers and industrial workers.

1. 1) affected 2) domiciled
3) motivated 4) deprived
5) favoured 

2. 1) financial 2) proud
3) cultural 4) unruly
5) swift

3. 1) comfortable 2) marshy
3) wild 4) unpopulated
5) inhospitable

4. 1) devoted 2) confined
3) susceptible 4) related
5) attached

5. 1) constant 2) deteriorated
3) developing 4) increasing
5) decreasing

6. 1) abundant 2) genuine
3) superficial 4) exorbitant
5) scant

7. 1) crucial 2) necessary
3) difficult 4) convenient
5) indispensable

8. 1) civilized 2) demoralised
3) wiped-out 4) entertained
5) reduced

9. 1) escaping 2) with
3) enhancing 4) leaving
5) continuing

10. 1) productive 2) primitive
3) profitable 4) cultivable
5) scientific