Maths Practice Question and Answer
8 Q: A rectangular plot is 32m by 24m. The owner of that plot wants to divide the plot into equal parts and for that purpose he builds a fence of wire on one diagonal. If wire costs Rs. 15.50 per metre, how much amount will be spent on fencing?
1982 05ec71fca112c8637e1b27ef8
5ec71fca112c8637e1b27ef8- 1620true
- 2618false
- 3616false
- 4612false
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Answer : 1. "620 "
Q: There are 40 boys in a class and average age of the class is 16 years. A boy of 17 years of age is replaced by another one, as a result average age becomes 15.875 years. Find the age of the new boy? 1982 05d19d6201388cd24f0860eff
5d19d6201388cd24f0860eff- 112 yearstrue
- 214.5 yearsfalse
- 315 yearsfalse
- 417 yearsfalse
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Answer : 1. "12 years"
Explanation :
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Q: A and B can do a piece of work in 12 days. B and C in 15 days and C and A in 20 days. If A, B and C work together, they will completer the work in : 1981 05cf0f1db0b8bee0fb6178ad9
5cf0f1db0b8bee0fb6178ad9- 15 daysfalse
- 2$$ 7{5\over 6} \ days$$false
- 310 daystrue
- 4$$ 15 {2\over 3} \ days$$false
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Answer : 3. " 10 days"
Q: Each member of a club contributes as much rupees and as much praise as the number of members of the club. If the total contribution is ₹2525, then the number of members of the club is:
1980 05dca3eb588990a4b0e7fda97
5dca3eb588990a4b0e7fda97- 160false
- 245false
- 355false
- 450true
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Answer : 4. "50 "
Q:A bar graph showing the height of six mountain peaks. Study the bar graph and answer the following Questions.
The average height of all the peak (in meters) is
1980 05f06deffb13c2d244adaaeee
5f06deffb13c2d244adaaeee- 17600true
- 27601.5false
- 37599.5false
- 47610false
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Answer : 1. "7600"
Q: If a=x+y, b=x-y, c=x+2y, then $$ {a^2+b^2+c^2}-ab-bc-ca $$ is
1980 05da80b32b542750caa3e266e
5da80b32b542750caa3e266e- 1$${4y^2}$$false
- 2$${5y^2}$$false
- 3$${6y^2}$$false
- 4$${7y^2}$$true
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Answer : 4. "$${7y^2}$$"
Q: The value of an article depreciates every year at the rate of 10% of its value. If the present value of the article is Rs 729, then its worth 3 years ago was
1979 05dbfb43fd701145da0b06966
5dbfb43fd701145da0b06966- 1Rs 1250false
- 2Rs 1000true
- 3Rs 1125false
- 4Rs 1200false
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Answer : 2. "Rs 1000"
Q: Two parallel chords are drawn in a circle of diameter 30 cm. The length of one chord is 24 cm and the distance between the two chords is 21 cm. The length of the other chord is 30 cm
1979 05ddfc7eb4e9f8676753e6835
5ddfc7eb4e9f8676753e6835- 110 cmfalse
- 218 cmtrue
- 312 cmfalse
- 416 cmfalse
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