Jharne De and Ranjana Kumar Solutions for Chapter: Commercial Mathematics, Exercise 3: Work It Out

 The population of a town increases by $4\%$ every year. If its current population is $1.6 lakh$, then how much was the population a year ago?

The cost of a dozen registers is $₹156$. How many registers can be bought for $₹91$?

 If the thickness of $12$ handmade sheets is $35 cm$, then find the number of sheets whose thickness is $857.5 cm$.

. In a hostel, there is enough stock of food for $1200$ students for $35$ days. Find the number of days for which the food would last if $480$ more students join the hostel.

 If $18$ women can embroider a saree in $35$ days, then in how many days will $42$ women embroider the same saree?

 Mr Verma pays $20\%$ of his salary as monthly rent for his apartment. If his annual salary is $8.4 lakh$, then find the monthly rent.

A customer pays $5\%$ GST in addition to the price of a certain article. Find the actual price of the article if the customer pays $₹1,575$.

 By selling an article for $₹25,920$ a shopkeeper gains $8\%$. Find the cost price of the article.