Number System 7.8% of 12.5 + 2.5% of 161 = ? 5 12 9 2 5 12 9 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 12.5/100 + 2.5 x 161/100= 0.975 + 4.025= 5
Number System What least number shall be added to 4700 to make it a perfect square ? 71 61 81 91 71 61 81 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number? 160 180 140 240 160 180 140 240 ANSWER DOWNLOAD EXAMIANS APP
Number System ?125÷5x ?=6265 124 1452 153 1253 124 1452 153 1253 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ? Rs. 820 Rs. 830 Rs. 800 Rs. 810 Rs. 820 Rs. 830 Rs. 800 Rs. 810 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the price of a pen be 'x' and that of pencil be 'y' Then 87x + 29y = 783Multiplying eqn (i) by 30/29 we get (87x) x 30/29 + (29y) 30/29 = 783 x 30/29∴ 90x + 30y = 810
Number System 4500 * ? = 3375 1/4 2/5 3/4 3/5 1/4 2/5 3/4 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4500 * x = 3375= x = 3375/4500 = 3/4
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