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Q:

In a mixture of 60 litres, the ratio of milk and water is 2:1. What amount of water must be added to make the ratio of milk and water as 1:2?

A) 42 Litres	B) 56 Litres
C) 60 Litres	D) 77 Litres

Answer & Explanation Answer: C) 60 Litres

Explanation:

Ratio of milk and water = 2 : 1
Quantity of milk = 60 X 2/3 = 40 litre
Quantity of water = 20 litre
To make ratio, 1: 2, we have to double the water that of milk
So, water should be 80 litre.
That means 80 – 20 = 60 litre water to be added.

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

Q:

Calculate the amount on Rs. 1875 for 2 year at 4% per annum, compounded yearly.

A) Rs. 676	B) Rs. 776
C) Rs. 1778	D) Rs. 2028

Answer & Explanation Answer: D) Rs. 2028

Explanation:

Amount = P(1 + r/100)^t
Amount = 1875(1 + 4/100)^2
Amount = 1875(104/100)(104/100)
Amount = 2028

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Filed Under: Compound Interest
Exam Prep: Bank Exams

Q:

75 pupils from a school appeared for an examination and 80% of them passed. Another school entered 10 more pupils than the first school and five pupils less than the first school passed. The pass % of in the second school was :

A) 75%	B) 84%
C) 72%	D) 64.7%

Answer & Explanation Answer: D) 64.7%

Explanation:

no of pupils pupil from first school for examination= 75
No. of pupil passed = 80% of 75 = 60
No. of pupil from second school = 85
No .of pupil passed from 2nd school = 55
Pass % from second school = 55/85 X 100 = 64.70%

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

In an election between two candidates 70% of the voters cast their votes, out of which 2% of the votes were declared invalid. A candidate got 7203 votes which was 60% of the total valid votes. Find the total number of voters enrolled in that election.

A) 18050	B) 17500
C) 17000	D) 7203

Answer & Explanation Answer: B) 17500

Explanation:

Let total number of votes enrolled = x
No. of voted cast = 70% of x = 0.7x
Valid votes = 98% of 0.7x
⇒ 60% of total valid votes = 7203 = 60% of 98% of 0.7x
⇒ 0.6 X 0.98 X 0.7x = 7203
⇒ x = 7203 / (0.6 X 0.98 X 0.7)
⇒ x = 17500

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

A sum of Rs. 2600 is lent out into two parts, one at 9% and another at 7% if the total annual income is Rs. 206, find the money lent at 7%.

A) Rs. 1400	B) Rs. 900
C) Rs. 1600	D) Rs. 1200

Answer & Explanation Answer: A) Rs. 1400

Explanation:

Money lent at 9% = x
Money lent at 7% = (2600 – x)
⇒ 9x/100 + (2600 – x) X 7 /100 = 206
⇒ 9x + 18200 – 7x = 20600
⇒ 2x = 2400
⇒ x = 1200
Money lent at 7% = 2600-1200 = 1400

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

The simple interest accrued on a sum of money at the end of four years is 1/5th of its principal. What is the rate of interest per annum?

A) 4%	B) 5%
C) 6%	D) Inadequate data

Answer & Explanation Answer: B) 5%

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

Q:

Srinivasan invests two equal amounts in two banks giving 8% and 12% rate of interest respectively. At the end of year the interest earned is Rs. 1500. Find the sum invested in each.

A) Rs. 5800	B) Rs. 15000
C) Rs. 7500	D) Rs. 17,000

Answer & Explanation Answer: C) Rs. 7500

Explanation:

Let the sum invested be x.
⇒ 8x/100 + 12x/100 = 1500
⇒ 20x = 150000
⇒ x = 7500

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Filed Under: Simple Interest
Exam Prep: Bank Exams

Q:

18 buckets of water fill a tank when the capacity of each bucket is 8 litres. How many buckets will be needed to fill the same tank, if the capacity of the bucket is 12 litres?

A) 12	B) 13.5
C) 24	D) Data insufficient

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