A boat covers x km downstream in 6 hours and also covers the same distance upstream in 15 hours. If the speed of the stream is decreased by 20%, then the time taken by the boat to cover 235 km downstream is 5 hours. Find the value of x? A. 210 B. 300 C. 160 D. 100 E. None of these Sol: Speed of ...
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Direction: What approximate value should come in the place of (?) in the following questions? Q. 18.18 *3.412 +24.32 *3.413 =?* √10 A.39 B.42 C.37 D.33 E.45 Sol: 18.18 * 3.412 + 24.32 * 3.413 = ? * √10 54 + 72 = ? * 3 ? = 42
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23, 21, ?, 118, 470, 2348 A.20 B.30 C.40 D.70 E.90 Sol: 23 * 1 – 2 = 21 21 * 2 – 2 = 40 40 * 3 – 2 = 118 118 * 4 – 2 = 470 470 * 5 – 2 = 2348
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Direction: Find out the wrong number in the following number series. Q. 0.5, 2, 4, 7.5, 9.5, 13 A.3 B.14 C.10.5 D.5 E.7.5 Sol: 0.5 + 1.5 = 2 2 +2 = 4 4+ 2.5 =6.5 6.5 + 3 = 9.5 9.5 + 3.5 = 13
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Direction: Find out the wrong number in the following number series. Q. 19, 99, 219, 353, 535, 759 A.99 B.535 C.759 D.353 E.219 Sol: 19 + (20 * 4) = 99 99 + (22 * 5) = 209 209 + (24 * 6) = 353 353 + (26 * 7) = 535 535 + (28 * 8) = 759
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The age of P after 8 years is equal to the present age of Q and the present age of P is 8/9th of the present age of R and the average of the ages of Q and R after 4 years is 42 years. Find sum of the present age of P and the age of Q before 6 years. ...
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(2/13) of 715 + (4/11) of 7150 = ? × 2 + 122 A.1357 B.1562 C.1283 D.1479 E. None of these Sol: (2/13) of 715 + (4/11) of 7150 = 2x + 122 (2/13) * 715 + (4/11) * 7150 = 2x + 122 110 + 2600 – 144 = 2x 2566 = 2x x = 2566 / 2 = 1283
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The simple interest on Rs. P at 15% p.a for 2 years is Rs.300 more than the simple interest on Rs.(P + 500) at 12% p.a for 2 years. What is the simple interest, if Rs.(2P + 500) is lent for 2 years at 12% rate of interest? A. Rs.1750 B. Rs.2350 C. Rs.3480 D. Rs.4810 E. None of these Sol: P * 15% ...
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(11.92% of 799.72) ÷ 3.01 = ? A.20 B.25 C.32 D.41 E.54 Sol: (11.92% of 799.72) ÷ 3.01 = ? => (12% of 800) ÷ 3 = ? => 96 ÷ 3 => 32
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10.13% of 249.82 + 5.68% of 99.88 =? => 10% of 250 + 6% of 100 => 25 + 6 => 31
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