Explanation

- If 6 men invest 33,000 → 1 man invests = 33,000 / 6 = 5,500  

- 18 men invest = 18 × 5,500 = Rs. 99,000  

Explanation

- Originally, 20 students shared the cost:  

  Each paid = x / 20

- When 4 students backed out, only 16 shared the cost:  

  Each paid = x / 16

We're told the new amount is $1.50 more than the original amount:

x / 16 - x / 20 = 1.5

LCM of 16 and 20 = 80, so:

(5x - 4x) / 80 = 1.5  

x / 80 = 1.5  

Multiply both sides by 80:  

x = 1.5 × 80 = 120

Explanation

: Average weight = 14 pounds, Number of turkeys = 25

Total weight = 25 × 14 = 350 pounds

Explanation

Let the number of English books Danish read in 2000 = x  

Then Urdu books in 2000 = 2x (twice as many)

Total books:

- In 1999:  

  English = 10, Urdu = 7 → Total = 17

- In 2000:  

  English = x, Urdu = 2x → Total = x + 2x = 3x

Total books in 2 years = 17 + 3x  

Total Urdu books = 7 + 2x  

Given: 60% of total books were Urdu  

So:

(7 + 2x) / (17 + 3x) = 0.6

Multiply both sides:

7 + 2x = 0.6(17 + 3x)  

7 + 2x = 10.2 + 1.8x  

2x - 1.8x = 10.2 - 7  

0.2x = 3.2  

x = 16

So, in 2000:

- English = 16  

- Urdu = 2×16 = 32  

- Total = 48

Explanation

Given:

- Average of 6 tests = 75  

  → Total marks = 6 × 75 = 450

- After dropping lowest grade, average of 5 tests = 85  

  → Total of best 5 tests = 5 × 85 = 425

So, the lowest grade = 450 - 425 = 25