Whole Numbers Test

Result

Whole Numbers Test - 9

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Question 1
1 / -0

A contractor hires 23 workers in the morning to do a work and 12 workers in the evening to do the work. If he pays Rs. 300 to each worker for his shift, then how much money does the contractor spend on workers each day?

A
Rs. 10,000

B
Rs. 10,500

C
Rs. 10,612

D
Rs. 10,950

Solution

Number of workers in the morning = 23
Number of workers in the evening = 12
Total number of workers in one day = 23 + 12 = 35
Money he pays to one worker = Rs. 300
Money he will pay in total = 300 × 35 = Rs. 10,500
or,
300 × (23 + 12) = 300 × 35 = Rs. 10,500
Question 2
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Amit has 12 chocolate candies, 28 lemon candies and 15 orange candies with him. Rohit has 18 chocolate candies, 23 lemon candies and 20 orange candies with him. How many candies do they have in total?

A
116

B
118

C
120

D
122

Solution

Number of candies Amit has in total = 12 + 28 + 15 = 55
Number of candies Rohit has in total = 18 + 23 + 20 = 61
Total candies they have = 61 + 55 = 116
Question 3
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In a box, there are 123 black beads. A person takes out 8 black beads and replaces them by 16 white beads. He kept repeating the pattern, till there are only white beads left in the box. How many white beads are present in the box in the end?

A
246

B
250

C
252

D
260

Solution

Number of black beads = 123
8 black beads are replaced by 16 white beads.
1 black bead is replaced by 16 ÷ 8 = 2 white beads.
So, for every 1 black bead, 2 white beads are put in the bag.
123 black beads would be replaced by 123 × 2 = 246 white beads.
Question 4
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One year's savings of Mohak is Rs. 23,512. He invested Rs. 10,562 in a policy. He gave Rs. 5,254 to charity and Rs. 5,500 to his wife. How much money is left with him?

A
Rs. 1,900

B
Rs. 2,011

C
Rs. 2,196

D
Rs. 2,250

Solution

Total savings = Rs. 23,512
Money invested in policy = Rs. 10,562
Money given to charity = Rs. 5,254
Money given to wife = Rs. 5,500
Money left with him
= 23,512 - (10,562 + 5,254 + 5,500)
= 23,512 - 21,316
= Rs. 2,196
Question 5
1 / -0

Directions For Questions

Study the following statements.

...view full instructions

Statement I. if 'a' is a whole number, then 3a will always be an odd number.
Statement II. If 'a' is a whole number, then 2a will always be an even number.

Which of the following options hold?

A
Both statements I and II are true

B
Statement I is true, but statement II is false

C
Statement I is false, but statement II is true

D
Both statements I and II are false

Solution

According to statement I, if 'a' is a whole number, then 3a is always an odd number, which is not true.
If a = 2, then 3a = 3 × 2 = 6, which is even. Hence, statement I is false.

According to statement II, if 'a' is a whole number, then 2a is an even number, which is always true.
Let a = 9, then 2a = 9 × 2 = 18, which is even. hence, statement II is true.