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Q.

Which of the following numbers must be subtracted from 84.5 to get 27.84?


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a

56.64 

b

56.66

c

52.66

d

55.66

answer is A.

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Detailed Solution

detailed_solution_thumbnail
Given that, a number is subtracted from 84.5 to get 27.84.
Let us consider the required number as x,
Then, 84.5-x=27.84
x=84.5-27.84
Write the numbers in the place value table and subtract,

 

Tens

Ones

Tenths

Hundredths

 

8

4

5

0

-

2

7

8

4

=

5

6

6

6

Now, write the number in decimal form
x=56.66
Hence, to get 27.84 we should subtract 56.66.
Therefore, option 1 is correct.
 
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