July 2023

Question Evaluate : 28% of 400 + 45 % of 250 Type multiple_choice Option 220.3 incorrect Option 224.5 correct Option 190.3 incorrect Option 150 incorrect Solution 28% of 400 + 45 % of 250 = (28/100 *400 + 45/100 * 250) = (112 + 112.5) = 224.5

Question (1000)6/1015 = ? Type multiple_choice Option 10 incorrect Option 100 incorrect Option 1000 correct Option 10000 incorrect Solution (1000)6/1015 = (1000)6 / 1015 = (103)6/1015 = 10(3*6)/1015 = 1018/1015 = (10)(18 – 15) = 103 = 1000

Question The ratio between the present ages of A and B is 3:5 respectively. If the difference between B’s present age and A’s age after 4 years is 2 , what is the total of A’s and B’s present ages? Type multiple_choice Option 24 years correct Option 32 year incorrect Option 48 years incorrect Option

Question Two-third of a positive number and 16/216 of its reciprocal are equal. Find the positive number. Type multiple_choice Option 9/25 incorrect Option 14/4 incorrect Option 4 /12 correct Option 144/25 incorrect Solution Let the positive number be x. Then, 2/3 x = 16/216 * 1/x x2 = 16/216 * 3/2 = 16/144 x =

Question The average weight of three boys P, Q and R is 54 kg, while the average weight of three boys Q, S and T is 60 kg. What is the average weight of P, Q, R, S and T? Type multiple_choice Option 66.4 kg incorrect Option 63.2 kg incorrect Option 58.8 kg incorrect Option

Question Given that √12 = 3.464 and √120 = 10.95, find the value of √1.2 + √1200 + √0.012. Type multiple_choice Option 32.164 incorrect Option 35.844 correct Option 36.164 incorrect Option 37.304 incorrect Solution Given exp. = √1.2 +√1200 +√0.0120 = √120/100 +√12*100 + √120/10000 = (√120)/10 + √12 * 10 + (√120)/100 = 10.95/10

Question If 2x +3y = 30 and (x+y)/y = 11/8, then find the value of 5y + 6x Type multiple_choice Option 72 incorrect Option 58 correct Option 64 incorrect Option 29 incorrect Solution The given equations are : 2x + 3y = 30 ——— (i)and, (x+y)/y = 11/88x + 8y = 11y8x – 3y =0

Question The ratio of two numbers is 4 : 5 and their H.C.F is 4. Find their L.C.M.  Type multiple_choice Option 96 incorrect Option 80 correct Option 73 incorrect Option 48 incorrect Solution Let the numbers be 4x and 5x.   H.C.F = x. So, x=4. So, the numbers are 16 and 20 L.C.M of

Question The unit digit in the product (624 * 708 * 913 * 463) is: Type multiple_choice Option 2 incorrect Option 5 incorrect Option 6 incorrect Option 8 correct Solution Unit digit in the given product = Unit Digit in (4*8*3*3) = 8