Calculate the number of bricks, each measuring 25 cm * 15 cm * 8 cm required to construct a wall of dimensions 10 m * 4 m * 5 m when 10% of its volume is occupied by mortar?

A. No profit No loss
B. Profit of Rs. 1000
C. Profit of Rs. 1100
D. Profit of Rs. 2000
Explanation:
B = 110% of Rs. 10000 = Rs. 11000
Loss of B = 10%
B = 90% of Rs. 1100 = Rs. 9900
A = Rs. 9900
= [(10% of Rs. 10000) + (10000 – 9900)] = Rs. 1100

A. 40
B. 100
C. 120
D. 140
Explanation:
Let C.P. = Rs. x.
Then, S.P. = Rs. (12% of x) = Rs. 6x/5
New S.P. = 2 * 6x/5 = Rs. 12x/5
Profit = 12x/5 – x = Rs. 7x/5
Profit = 7x/5 * 1/x * 100 = 140%.