Question

A cement company earns a profit of 8 per bag of white cement sold and a loss of 5 per bag of grey cement sold.
(a) The company sells 3,000 bags of white cement and 5,000 bags of grey cement in a month. What is its profit or loss?
(b) What is the number of white cement bags it must sell to have neither profit nor loss, if the number of grey bags sold is 6,400 bags.
NCERT Class 7th Mathematics Chapter 1 Integers

Answer 1

a) Total profit = 8 * 3000 = 24000
     total loss = 5 * 5000 = 25000
loss or profit  = 24000 - 25000 = -1000
The gets loss of 1000
b) Total loss = 6400 * 5 = 32000
Total profit should be 32000 = x* 8
x = 4000
No of white cement sold = 4000