Number System If 35% of a number is 899.5, what is 68% of that number ? 1547.6 2247.6 1747.6 1847.6 1547.6 2247.6 1747.6 1847.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6
Number System The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ? Rs. 830 Rs. 810 Rs. 800 Rs. 820 Rs. 830 Rs. 810 Rs. 800 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 If one-seventh of a number is 55 then 40% of that number = ? 154 163 147 171 154 163 147 171 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System What is the sum of all even numbers from 1 to 701? 122500 122550 123850 122850 122500 122550 123850 122850 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 700/2 = 350350 * 351 = 122850
Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 42 69 90 72 42 69 90 72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System (√6 + 1)² = ? + 2√6 6 7 5 8 6 7 5 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (√6 + 1)² - 2√6= (√6)² + 2 x √6 + 1 + 1² - 2√6= 6 + 2√6 + 1 - 2√6 = 6 + 1 = 7
EXAMIANS