HCL Papers: Sample Questions 46 - 47 of 57

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Question number: 46

Write in Short

When two numbers are added it gives 330. When the last digit of the greater number is removed, 1st number is obtained. Find the numbers.

Explanation

• When two numbers are added it gives 330, i. e.
• Let x be the larger number and y be the smaller one. If we remove the last digit of the greater number, other number is obtained.
• From this information we can say that last digit must be 0.
• Lets assume the number is 330. Divide this number into two parts, 300 and 30. If we remove the right most 0 from 300 then we will get 30, which is the second number, i. e. 30. Adding these two numbers (300 and 30) we are getting 330.
• So, we can say that numbers are 300 and 30.

Question number: 47

MCQ▾

Question

Working independently, Tina can do a certain job in 12 hours. Working independently, Ann can do the same job in 9 hours. If Tina works independently at the job for 8 hours and then Ann works independently, how many hours will it take Ann to complete the remainder of the job?

Choices

Choice (4) Response

a.

b.

c.

3

d.

2

c.

Explanation

• More working hours, more work done
• We can say working hours and work done are in direct proportion.
• Tina can complete a work in 12 hours.
• In 12 hours Tina can do 1 complete work
• Then in 8 hours she can complete x amount of work

• So, Tina has completed of whole work.
• Yet of the work is incomplete which Ann has to do.
• Ann can complete a work in 9 hours.
• Ann can do 1 complete work in 9 hours
• Then work she can complete in y hours

• So, Ann can complete the remaining work in 3 hours.