# Aptitude [HCL Placement]: Sample Questions 9 - 10 of 43

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## Question 9

Aptitude

### Question

MCQ▾

Worker W produces n units in 5 hours. Workers V and W works independently but at the same time, produce n units in 2 hours. How long would it take if V alone to produce n units?

Choice (4)

a.

3 hr 20 min

b.

1 hr 53 min

c.

3 hr 30 min

d.

1 hr 26 min

a.

### Explanation

• Worker W can independently produce n units in 5 hours
• Worker V and W together can produce n units in 2 hours
• In x hour՚s worker V independently can produce n units
• We can write the given statement in equation form,

• 1 hour = 60 minutes
• hour = 20 minutes
• So, x = 3 hr 20 minutes
• Worker V will take 3 hours 20 minutes to produce n units independently.

## Question 10

Aptitude

### Question

MCQ▾

An investor purchased shares of stock at a certain price. If the stock increased in price ₹ 0.25 per share and the total increase for the x shares was ₹ 12.50, how many shares of stock had been purchased?

Choice (4)

a.

25

b.

100

c.

125

d.

50

d.

### Explanation

• Investor purchases some shares. The stock price increases 0.25 per share and total price for x shares is ₹ 12.50
• By dividing total price for x shares with price for one share we can calculate no. of shares.
• Total number of shares =

= 50

• Total 50 shares have been purchased by investor.

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