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Q.

A labourer earns Rs. 1980 in 12days. In how many days will he earn Rs.2640?

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a

   15

b

   16

c

   17

d

   18 

answer is B.

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Detailed Solution

Given: The amount earned by the labourer is Rs.1980 in 12 days. To find out: In how many days a labourer will earn Rs.2640
By unitary method:
The amount of money earned by a labourer in 1 day = 1980
12

= 𝑅𝑠. 165
Therefore a labourer earns 𝑅𝑠. 165 in one day.
The number of days required by labourer to earn 𝑅𝑠. 2640 = 2640 = 16
165
Hence,a Labourer requires 16 days to earn 𝑅𝑠. 2640
 
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