Rahul Sofat Solutions for Chapter: Integers, Exercise 4: EXERCISE 1.3

Simplify using suitable properties of multiplication of integers: $\left(-3\right)\times 5+\left(-3\right)\times 3$

Simplify using suitable properties of multiplication of integers: $7\times \left(-13\right)+7\times \left(-10\right)$

Simplify using suitable properties of multiplication of integers: $10\times \left(-4\right)+5\times \left(-4\right)$

Simplify using suitable properties of multiplication of integers: $\left(-12\right)\times \left(-7\right)+\left(-12\right)\times \left(-3\right)$

Simplify using suitable properties of multiplication of integers: $16\times \left(-68\right)+16\times \left(-32\right)$

In a competitive examination, $5$ marks are awarded for each correct answer, $2$ marks are deducted for each incorrect answer and no marks are given for a question which is not attempted.
Nishi appeared in the examination and attempted $12$ questions correctly and $5$ questions incorrectly. However she did not attempt $3$ questions. What will be her score?

In a competitive examination, $5$ marks are awarded for each correct answer, $2$ marks are deducted for each incorrect answer and no marks are given for a question which is not attempted.
Rohan attempted $7$ questions correctly and $9$ questions incorrectly. He did not attempt $4$ questions. What will be his score?

A company is producing two products A and B. The company makes a profit of $₹52$ per unit on A and a loss of $₹10$ per unit on B. If the company sells $3,600$ units of product A and $4,000$ units of product B, find the profit or loss of the company due to the sale.