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Number System

Number System
If one-third of one fourth of a number is 15, then three-tenth of that number is:

45
35
25
54

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.

Number System
Find the average of the following set of scores 450, 1050, 12, 390, 143, 286, 550, 999

485
490
495
480

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Required average score                    = (450 + 1050 + 12 + 390 + 143 + 286 + 550 + 999) / 8                   = 3880 / 8                   = 485

Number System
If the sum of four consecutive numbers is 370, which the following is the third lowest number among them

91
90
92
89

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92

Number System
732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ?

641.68
631.68
621.68
651.68

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 1361.20 - 709.52 = 651.68

Number System
One-eighth of a number is 76. What will be 54% of the number ?

321.32
328.32
332.32
318.32

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x Therefore, 1/8 of x = 76Therefore, x = 60854% of 608                      = 608 x 54/100                      = 328.32

Number System
The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number?

270
360
295
240

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the smallest number be x.Then larger number = (x + 1365)x + 1365 = 6x + 15= 5x = 1350 x = 270Smaller number = 270.

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