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Number System

Number System
Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number?

248
126
148
210

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126

Number System
A laborer is engaged for 30 days on the condition that he receives Rs.25 for each day he works and is fined Rs.7.50 for each day is absent. He gets Rs.425 in all. For how many days was he absent?

8
10
9
6

ANSWER DOWNLOAD EXAMIANS APP

Number System
Sum of square of first number and cube of second number together is 568. Also square of the second number is 15 less than square of 8. What is the value of three-fifth of the first number ?

9
6
7
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the first number be x and the second number be y.∴ y² = 82 - 15 = 64 - 15 = 49∴ y = 7∴ x² + 73 = 568= x² + 343 = 568= x² + 568 - 343 = 225∴ x = √225 = 15∴ 15 x 3/5 = 9

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

25
54
35
45

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
The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ?

245
188
141
162

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.45% of x - 18% of x = 145.8∴ x/100 (45 - 18) = 145.8∴ x = 145.8 x 100/27 = 540∴ 30% of 540 = 540 x 30/100 = 162

Number System
65 x 288 ÷ 52 = 1.8 x ?

200
180
190
210

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 65x288/52x1.8 = 200

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