Explanation

Given ratio: 50 paisa:1 rupee:2 rupee = 2:5:8

Let's assume the number of coins of each denomination are:

50 paisa = 2x

1 rupee = 5x

2 rupee = 8x

Total amount = Rs. 352

The value of coins is:

50 paisa coins = 2x * 0.50 = Rs. x

1 rupee coins = 5x * 1.00 = Rs. 5x

2 rupee coins = 8x * 2.00 = Rs. 16x

Adding these values, we get:

x + 5x + 16x = 352

Combine like terms:

22x = 352

Divide by 22:

x = 16

Now, find the total number of coins:

50 paisa coins = 2x = 2(16) = 32

1 rupee coins = 5x = 5(16) = 80

2 rupee coins = 8x = 8(16) = 128

Total number of coins = 32 + 80 + 128 = 240

So, the correct answer is: 240

Explanation

1 kilometre is equal to 1000 metres.

Explanation

Cost Price (CP) = Rs. 5000  

Selling Price (SP) = Rs. 4000  

Loss = CP − SP = 5000 − 4000 = Rs. 1000

Loss % = (Loss / CP) × 100  

= (1000 / 5000) × 100  

= 20%

Explanation

The pattern of the series is:

+1, +2, +3, +4, +5...

So, the next difference should be +6:

16 + 6 = 22

The correct answer is 22.

Explanation

Series: 64, 48, 40, 36, 34, ?

Now find the differences between consecutive terms:

- 64 → 48: -16  

- 48 → 40: -8  

- 40 → 36: -4  

- 36 → 34: -2

You can see the differences are decreasing: -16, -8, -4, -2...

Next difference: -1

So, 34 - 1 = 33

Explanation

1 square foot = 12 inches × 12 inches = 144 square inches

Explanation

3/1000 is already a fraction.

To convert it to a decimal:

3/1000 = 0.003

Explanation

total students = 25

failed = 4

passed students = 25-4 = 21

percentage of pass = 25 is (100%)

failed percentage = 25÷4 = 6.2 %

passed percentage is = 21/25 × 100 = 84%

Explanation

To determine the fraction of boys in the history class when there are 12 boys and 18 girls,

we can follow these steps:

1. Calculate the total number of students in the class:

Total number of students = 12 boys + 18 girls = 30 students

2. Find the fraction of boys in the class:

Fraction of boys = Number of boys / Total number of students

= 12 boys / 30 students

= 2/5

Explanation

6, 9, 13, 16, 20, 23, ......

+3 +4 +3 +4 +3 +4

6+3 = 9

9+4 = 13

13+3 = 16

16+4 = 20

23 + 4 = 27

So, 27, 30