SSC CGL (SSC Combined Graduate Level) Mathematics: Questions 402 - 406 of 425

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Question number: 402

» Average

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Question

The average marks of 50 students in a test is 80. Later it is found that three marks 60,70 & 80 were wrongly entered as 62,72 & 82. The average marks after mistakes were rectified is

Choices

Choice (4) Response

a.

b.

c.

71.6

d.

79.98

Question number: 403

» Percentage

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Question

A man bought a second-hand typewriter for Rs. 1000 and spent Rs. 600 on its repairs. He sold it for Rs. 2000. His profit percent is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 404

» Average

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The distance between two stations P and Q is 1200 km. A train starts from P and moves towards Q at an average speed of 40 km/hr. another train starts from Q at the same time and moves towards P at an average speed of 80 km/hr. How far from P will they cross each other?

Choices

Choice (4) Response

a.

600 km

b.

200 km

c.

400 km

d.

500 km

Question number: 405

» Surds

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Question

The square root of is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 406

» Average

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MCQ▾

Question

The distance between two stations P and Q is 800 km. A train starts from P and moves towards Q at an average speed of 30 km/hr. another train starts from Q at the same time and moves towards P at an average speed of 70 km/hr. How far from P will they cross each other?

Choices

Choice (4) Response

a.

240 km

b.

100 km

c.

541 km

d.

300 km

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