Question

If the sum of two numbers is 31.021. If one of them is 11.56, then the other number is
(a) 19.461
(b) 17.461
(c) 18.641
(d) 19.561

Answer 1

Hint: First, before proceeding for this, we must suppose the other number as x. Then, we are given with the condition that the two numbers which are 11.56 and x sums to 31.021. Then, by using this above mentioned equation, we can get the value of x by rearranging the equation. Then, by subtracting 11.56 from both sides, we get the desired answer.

Complete step-by-step answer:
In this question, we are supposed to find the value of another number if the sum of both the numbers is 31.021 and one of the numbers is 11.56.
So, before proceeding for this, we must suppose the other number as x.
Now, we are given with the condition that the two numbers which is 11.56 and x sums to 31.021 as:
11.56+x=31.021
Now, by using this above mentioned equation, we can get the value of x by rearranging the equation.
So, by subtracting 11.56 from both sides, we get:
11.56+x-11.56=31.021-11.56
x=19.461
So, by using this method, we get the value of another number which is supposed as x is 19.461.
So, the correct answer is “Option A”.

Note: Now, to solve these types of questions we need to know some of the basics of the addition and subtraction of the decimal terms which should be kept in mind while solving these types of questions. As such these questions are simple none the less we commit a calculation mistake in solving these types of problems. So, keep in mind the subtraction of the decimal numbers before proceeding for this question.