Number System The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ? Rs. 800 Rs. 810 Rs. 830 Rs. 820 Rs. 800 Rs. 810 Rs. 830 Rs. 820 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 Four-fifth of a number is 10 more than two-third of the same number. What is the number? 91 89 75 35 91 89 75 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is 775 640 725 750 775 640 725 750 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Failed students are 32% which is 248.∴ Total = 24800/32 = 775
Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 720 660 556 515 720 660 556 515 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In FRUGAL there ae six difference letters Therefore, 6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System 4/6 of 6/5 of 5/7 of a number is 96. Find the number. 164 162 168 170 164 162 168 170 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 4/6 x 6/5 x 5/7 = 96∴ x = 96 x 6 x 5 x 7/4 x 6 x 5 = 168
Number System 17580 x 1.8 - 13720 x 2.1 = ? x 2.4 1180 1140 1160 1120 1180 1140 1160 1120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2.4 x ? = 31644 - 28812 = 2832∴ ? = 2832/2.4= 1180
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