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RRB JE 2019:Maths Revision Quiz-9

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Question 1

Tanushree can finish a task in 10 days by working 6 hours per day. Moutrisha can finish the same task in 12 days by working 4 hours per day. If they start to work together by 8 hours per day, in how many days will they finish the task?

Question 2

In a quadrilateral ABCD, ABC= ,AB=3 cm, BC = 4 cm and CD = 5 cm. Find the area of quadrilateral ABCD.

Question 3

What is the value of 2sec2A?

Question 4

Find the median of the numbers 20, 22, 11, 10, 4, 20, 32

Question 5

Ankita travels 35 km towards the west, takes a right turn and travels 50 km. Next, she takes another right turn and travels 35 km in that direction. How far is she now from her original position?

Question 6

Two circle of radius 37 cm and 20 cm intersect each other at A and B. Q and P are the centers of the circles. If the length of AB is 24 cm, than find length of OP

Question 7

In 5 hrs. a swimmer can row 35 km downstream and 25 km against the stream in the same time. Find the speed of stream.

Question 8

The speed of the first train is two-thirds to that of the second train. If they cross a man standing on a platform in 9 sec and 12 sec respectively then what is the respective ratio of their lengths?

Question 9

What least number must be subtracted from 210, so that the sum is completely divisible by 11?

Question 10

The LCM of three number is 120. Which of the following cannot be their HCF?

Question 11

In a class, the ratio of average age of boys to the average age of girls is 7:6 and no. of girls in class are 26. When 2 boys of 17.5 years each are not counted then average age of boys remains same. If the total age of all the boys is 45 less than double the total age of all the girls then find the approx. average age of whole class.

Question 12

A, B and C enter into a partnership, investing Rs. 6000. A invests Rs. 1000 and B and C invest in the ratio of 2:3. Find the profit of C, when the annual profit is Rs. 2400

Question 13

Profit on selling 10 candles equals selling price of 3 bulbs. While loss on selling 10 bulbs equals selling price of 4 candles. Also profit percentage equals to the loss percentage and cost of a candle is half of the cost of a bulb. What is the ratio of selling price of candle to the selling price of a bulb?

Question 14

A man's annual income has increased by Rs 5 lakhs but the tax on income that he has to pay has reduced from 12% to 10%. He now pays Rs 10,000 more income tax. What is his increased income (in Rs lakhs)?

Question 15

In a race of 200 m A beats B by 40 m and B beets C by 5 seconds. If all three are participating in 1000 m race and A finishes the race 10 seconds before B then what is time required for C for 1000m?
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