Unitary Method

If cost of $1$ dozen bananas is $₹60$, the cost of $1$ apple is$₹15$ and cost of $1$ mango is$₹20$. Find the total amount spent on $60$ bananas,$36$ apples and $42$ mangoes .

Tower $J$ has some flats with $3$ bedrooms and some with $2$ bedrooms. Three-fourth of the flats have $3$ bedrooms and the rest have $2$ bedrooms. The total number of bedrooms is $385$. How many two-bedroom flats are there in tower $J$?

In a box there were $10$ glass jars. $12$ boxes of such type were delivered to Mr. Sharma. In $5$ boxes, half of the jars were broken. How many jars in good condition were delivered to Mr.Sharma?

The monthly income of Shoba is $₹1,44,000$ in $15$ months. How much will she earn in $7$ months.

A chair costs $₹250$ and a table costs $₹400$. If a housewife purchased a certain number of chairs and two tables for $₹2800$, find the number of chairs purchased?

There is $15 \mathrm{kg}$ of sugar. $\frac{1}{7}$ of it is packed into one packet. How many packets can be made?

A class has 40 students. Every student contributed ₹ $2.50$ to the class fund. $\frac{3}{10}$ of the total fund was used by the class to buy prizes for a Mathematics quiz. How much money does the class fund have left?

If a dozen bananas cost$₹66$, then how many bananas can be bought for $₹132$?

The capacity of $1$ tanker is $288$ litre. So what will be the capacity of $30$ tankers?

A vendor sold $7$ litre of milk on Monday at $₹30$ per litre. He sold $8$ litre on tuesday at $₹35$ per litre. Find the amount of sale made by him during these two days.

The cost of $\frac{19}{4} \mathrm{metres}$ of rope is $\$\frac{171}{2}$. Find the cost of one $\mathrm{metre}$ of rope in $\$$.

A woodcutter took $12$ minutes to make $3$ pieces of a block of wood. If he needs $k$ minutes to make $5$ such pieces, find $k$.

Amount of salt in sea water is approximately 3.5 $ \times {10}^{4}$ ppm. PPM stands for parts per million.

For example, 1 ppm of salt means 1 g of salt in $ {10}^{6}$ g of water.

Which of these gives the weight of salt in 200ml of sea water?

(Note: Consider 1L of sea water as 1 kg)

The quarterly school fee in a Vidyalaya for class $\mathrm{VI}$ is $₹ 840$. What will be the fee for six months? If the answer is $₹ \mathrm{k}$, then write the value of $\mathrm{k}$ in the answer box.

A woman worker earns $₹18,000$ in $15$ months. In $k$ months she will earn $₹30,000$. Find the value of $k$

There are two taps opening into a tank. If only the first tap is opened, the tank fills in $10 \mathrm{minutes}$. If only the second tap is opened, it takes $15 \mathrm{minutes}$ to fill the tank. If only the first tap is opened, what fraction of the tank would be filled in one minute?

The cost of $4$ dozen bananas is $₹60$. How many bananas can be purchased for $₹12.50$?