Number System The difference between two integers is 5. Their product is 500. Find the numbers. 21, 26 30, 25 15, 20 20, 25 21, 26 30, 25 15, 20 20, 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System ?125÷5x ?=6265 124 1253 153 1452 124 1253 153 1452 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 24 25 23 26 24 25 23 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System (4 86%of 6500) ÷ 36 =? 977.5 677.5 877.5 777.5 977.5 677.5 877.5 777.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 12 10 16 14 12 10 16 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System √360 - 225 x 2 + 379 = ? 20 19 18 17 20 19 18 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17
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