1 .In a ΔPQR, S and T are mid–points of the sides PQ and PR respectively. U is a point on ST such that SU: UT = 2 : 5. If SU = 8, then the length of QR is–
Answer & Explanation
Answer : Option B |
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Explanation : |
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2 .If $1\over2$ part of a tank is filled with water, it contains 60 L water. How much water is required for filling the half of the tank?
Answer & Explanation
Answer : Option C |
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Explanation : |
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3 .What will be the area of a circle whose perimeter is 132 cm?
A. 1423 $cm^2$
B. 1223 $cm^2$
C.1286 $cm^2$
D.1386 $cm^2$
Answer & Explanation
Answer : Option D |
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Explanation : |
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4 .One angle of a right angle triangle is 70º. Which one of the following its angles is–
Answer & Explanation
Answer : Option D |
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Explanation : |
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Third angle = 180º – (90 + 70) = 20º |
5 .If 60 men can complete a work in 30 days working 12 hrs a day. In how many days will 90 men complete the work, working 8 hr a day?
Answer & Explanation
Answer : Option C |
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Explanation : |
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60 men working 12hr a days complete a work in 30 days
1 Man work in 1 hr a day complete a work in = 30 × 60 × 12 = 21600 days
∴ 90 men working 8hr a day can complete the same work in = $21600\over90x8$ = 30 days |
6 .If $5\over4$ part of a work is done by 12 men in 15 days, how many men will be require to complete the whole work in 25 days?
Answer & Explanation
Answer : Option C |
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Explanation : |
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In 15 days $5\over4$ work is done by 12 men
∴ 1 day work is done by 12× 15 × $5\over4$
∴ In 25 days 1 work is done by = $3 15 5\over25$ = 9 men |
7 .The ratio between boys and girls in a school is 6 : 8 respectively. If the number of boys is increased by 200 the ratio becomes 7 : 8 respectively. How many girls are there in the school?
Answer & Explanation
Answer : Option A |
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Explanation : |
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Let the number of boys and girls be 6x and 8x respectively. According to question,
$6x+200\over8x$= $7\over8$
6x + 200 = 7x
7x– 6x = 200 x = 200
The number of girls = 8 × 200 = 1600 |
8 .The monthly salary of Ram is ` 20,000. Which is ` 2000 less than the salary of Pawan. What is ratio between the salary of Ram and Pawan respectively?
Answer & Explanation
Answer : Option C |
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Explanation : |
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The salary of Pavan = 20,000 + 2,000 = ` 22,000
Required ratio = $20,000\over22,000$=$10\over11$
=10:11 |
9 .The average of 6 quantities is 10 and the average of 4 of them is 8. What is the average of the remaining?
Answer & Explanation
Answer : Option C |
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Explanation : |
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The average of 6 quantities is 10. Therefore, the sum of all 6 quantities is 60. The average of 4 of them is 8. Therefore the sum of 4 quantities = 32 Therefore, the sum of the remaining two quantities = (60 – 32) = 28 Hence the sum average of the 2 qunatities
= $28\over2$= 14 |
10 .If, after the payment of $3\over4$ of a loan ` 1000 still remain to pay. What is whole amount of the loan?
Answer & Explanation
Answer : Option A |
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Explanation : |
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