S Purkayastha Solutions for Chapter: Integers, Exercise 2: Check Point

For the non-zero integers $a, b, c$, the product $a\times b\times c$ is always greater than either $a$ or $b$ or $c$.

$920\times 0=920$

$0\times \left(-1\right)=\left(-1\right)$

$5\times \left[-8+3\right]=5\times \left(-8\right)+5\times 3$

$\left(63-56\right)\times 5=63-56\times 5$

A certain freezing process requires that room temperature be lowered from $40°\mathrm{C}$ at the rate of $5°\mathrm{C}$ every hour. What will be the room temperature $10$ hours after the process begins?

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. The company sells $3000$ bags of white cement and $5000$ bags of grey cement in a month. What is its profit or loss.

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. What is the number of white cement bags it must sell to have neither profit nor loss, if $6400$ bags of grey cement are sold?