Explanation

Total investment = Rs. 500000

B's share = 20% of Rs. 500000 = 0.20 x 500000 = Rs. 100000

A's share = 40% of B's share = 0.40 x 100000 = Rs. 40000

So, the share of A is Rs. 40000.

Explanation

Since the man scored 60% of the total marks, and he solved all the 12 questions correctly, the score of 12 correct answers corresponds to 100%.

Thus, the man solved all 12 questions correctly to achieve his score.

Explanation

First, let's calculate the total cost price (CP) including the sales tax:

CP = Rs. 250 (cost) + 15% of Rs. 250 (sales tax)

= Rs. 250 + (15/100) × Rs. 250

= Rs. 250 + Rs. 37.50

= Rs. 287.50

Now, let's calculate the profit:

Profit = Selling Price (SP) - Total Cost Price (CP)

= Rs. 315 - Rs. 287.50

= Rs. 27.50

So, Ali made a profit of Rs. 27.50!

Explanation

Explanation

Explanation

The old length and width are L and W.

The new length and width are (1.1)L and (1.1)W.

The old area is A = LW.

The new area is A = (1.1)L*(1.1)W = (1.21)LW

or an increase of 21%

Explanation

1 Barrel = 158.98 Liters (rounded off to 159 liters approx).

1 oil barrel is equal to 42 US gallons,

which is about 159 litres 

35 imperial gallons.

Explanation

To find 12% of 1200, you can multiply 1200 by 0.12 (which is equivalent to 12%).

1200 x 0.12 = 144

So, 12% of 1200 is 144!

Explanation

Zakat is calculated as 2.5% percent on savings

80000 x 2.5%

80,000x25.5x100

2000

***

ND29-11-2022

Explanation

Since he spent 88% of his income, he has 12% of his income left (100% - 88% = 12%).

We know that 12% of his income is Rs. 2160, so we can set up the equation:

12% of x = 2160

To solve for x, we can convert the percentage to a decimal by dividing by 100:

0.12x = 2160

Now, divide both sides by 0.12:

x = 2160 / 0.12

x = 18000

So, his income is Rs. 18000!