Answer

Verified

448.2k+ views

**Hint:**Here we are going to use the unitary method to solve this problem. That is we have to find money earned by the man in one day and then with the help of the amount we can find how many days the man requires to earn the given amount.

**Complete step-by-step answer:**

Now we have a labourer earn \[Rs.{\rm{ 1980}}\] in \[12\] days.

By the unitary method first we have to find quantity of single unit value

Therefore, now we are going to find a labourer who earns money for one day. Dividing earned money \[Rs.{\rm{ 1980}}\] by the number of days to earn that money. It is \[12\] days.

Hence,

\[\Rightarrow {\rm{ }}\dfrac{{1980}}{{12}}\]

Cancelling the numerator and denominator by \[4\] we get,

\[ \Rightarrow {\rm{ }}\dfrac{{1980}}{{12}} = \dfrac{{495}}{3}\]

Cancelling the numerator and denominator by \[3\] we get,

\[ \Rightarrow {\rm{ }}\dfrac{{495}}{3} = \dfrac{{165}}{1} = Rs.{\rm{ }}165\]

Therefore a labourer earns \[Rs.{\rm{ }}165\] in one day.

Again using the unitary method we have to multiply the single unit value into our required value.

Now we have to find how many days a labourer takes to earn \[Rs.{\rm{ 2640}}\].

Hence we have to divide\[Rs.{\rm{ 2640}}\]by\[Rs.{\rm{ }}165\]that is the amount earned by the person in a day.

\[ \Rightarrow {\rm{ }}\dfrac{{2640}}{{{\rm{165}}}}\]

\[ \Rightarrow {\rm{ 16}}\]

Now we find \[{\rm{16}}\] days takes a labourer to earn \[Rs.{\rm{ 2640}}\].

**Additional Information:**Unitary method: The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value. In essence, this method is used to find the value of a unit from the value of a multiple, and hence the value of a multiple.

**Note:**Here we have to divide the amount earned by the labourer in 12 days by 12 to get the amount earned in a single day. It is asked that we have to find the number of days to earn the given amount. That is we have divided the given amount by the amount earned by man in a day. Suppose we are given to find the amount and days are given we should multiply the days with the amount earned in a day.

Recently Updated Pages

How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE

Mark and label the given geoinformation on the outline class 11 social science CBSE

When people say No pun intended what does that mea class 8 english CBSE

Name the states which share their boundary with Indias class 9 social science CBSE

Give an account of the Northern Plains of India class 9 social science CBSE

Change the following sentences into negative and interrogative class 10 english CBSE

Trending doubts

Difference Between Plant Cell and Animal Cell

In Indian rupees 1 trillion is equal to how many c class 8 maths CBSE

Which are the Top 10 Largest Countries of the World?

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

How do you graph the function fx 4x class 9 maths CBSE

The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths