Number System If 70% of an equal to 40% of b, then ratio between a and b is? None 7: 4 7: 11 4: 7 None 7: 4 7: 11 4: 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
Number System Radha's present age is three years less than twice her age 12 years ago. Also the respective ratio between Raj's present age and Radha's present age is 4 : 9. What will be Raj's age after 5 years ? 17 years 16 years 14 years 15 years 17 years 16 years 14 years 15 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let Radha's present age = x years.∴ x = 2 (x = 12) - 3= x = 2x - 24 - 3= x = 27∴ Raja's present age = 4/9 x 27= 12 years ∴ Raja's age after 5 years = 12 + 5 = 17 years
Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 44 47 46 45 44 47 46 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System 1827÷ 36 x ?=162.4 3.2 1.9 4.3 2.6 3.2 1.9 4.3 2.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 77/73 93/77 73/77 83/77 77/73 93/77 73/77 83/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System Find the least value of 3x + 4y if x2y3 = 6. 3 10 7 6 3 10 7 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
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