Dr. Lal and Jain Solutions for Exercise 1: Exercise 6

Praveen's income increases by $25\%$ And becomes $1\frac{1}{2}$ Times to that of Rakesh. What were the total emoluments of Praveen before the increase?

A shopkeeper buys respectively $106 kg$ and $94 kg$ of two kinds of tea at the rate $₹25.50 per kg$ and $₹30.50 per kg$. He mixes both kinds of tea and sells the mixture at $₹33.42 per kg$.  What is his gain percent?

Find a single equivalent increase, if a number is successively increased by $10\%,15\%$ and $20\%.$

Split the number $120$ into two parts such that one part is$20\%$ of the other.

Find a single discount equivalent to a discount series of $20\%,10\%$ and$5\%$ -

The price of sugar is increased by $20\%$ and a housewife reduced her consumption of sugar by $20\%$, and hence, her expenditure on sugar-

A shopkeeper marks the price of an item $15\%$ higher than the original price. Due to an increase in demand, he further increases the price by $10\%$. How much $\%$profit will he get?

The salary of a worker is first increased by $10\%$ and thereafter it was reduced by $10\%$. What was the change in his salary?