Basic Mathematics-Arithmetic (KVPY Stream-SA (Class 11) Math): Questions 55 - 59 of 83

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Question number: 55

» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method

MCQ▾

Question

Two workers A and B are engaged to do a piece of work. Working alone, A takes 12 hours more to complete the work than if both worked together. On the other hand, working alone, B would need 3 hours more to complete the work than if both worked together. How much time would they take to complete the job working together?

Choices

Choice (4) Response

a.

92hr

b.

9 hr

c.

8 hr

d.

6 hr

Question number: 56

» Basic Mathematics » Arithmetic » Ratio and Proportion

MCQ▾

Question

I carried 500 kg of watermelon in summer by train. In the beginning, the water content was 95%. By the time I reached the destination, the water content had dropped to 92%. The reduction in the weight of the watermelon was-

Choices

Choice (4) Response

a.

312.5

b.

150.5

c.

163

d.

187.5

Question number: 57

» Basic Mathematics » Arithmetic » Simplifying Expressions

MCQ▾

Question

If x is real, the value of x26x+14 will not be less than,

Choices

Choice (4) Response

a.

5

b.

8

c.

7

d.

6

Question number: 58

» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method

MCQ▾

Question

12 women can complete a work in 5 days and 12 children take 10 days to complete a work. How many days will 3 women and 6 children take to complete the work?

Choices

Choice (4) Response

a.

12

b.

8

c.

9

d.

10

Question number: 59

» Basic Mathematics » Arithmetic » Simplifying Expressions

MCQ▾

Question

If α is the root of x2+5x2=0 then other root β is –

Choices

Choice (4) Response

a.

β=2α2+10α6α

b.

β=α2+5α7

c.

β=2α5α2

d.

All a. , b. and c. are correct

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