Math, asked by saurabh1020, 1 year ago

The sum of two consecutive odd numbers is 21. find the numbers

Answers

Answered by Equestriadash

1st term: x

2nd term: x + 2 (Since it's an odd number, we add 2 because the difference between 2 odd numbers is 2)

x + x + 2 = 21

2x + 2 = 21

2x = 21 - 2

2x = 19

x = 19/2

x = 9.5

Therefore the two terms are x = 9.5 and x + 2 = 9.5 + 2 = 11.5

Hope it helps :)

Equestriadash: How?

HarshitSatyam: The question is saying that sum of consecutive odd numbers and 2 is not a odd no.

Equestriadash: Yes of course 2 is not an odd number. The difference between two odd numbers is 2. So you add 2. For example 3 + 2 = 5 (Which is odd).

Equestriadash: Otherwise also if you add 11.5 and 9.5 you get 21.

HarshitSatyam: In class 7 book same question is given in rs aggarwal.

Equestriadash: Yeah so?

HarshitSatyam: if we add 11.5 and 9.5 we will not get 21

HarshitSatyam: so the answer is wrong.

Equestriadash: Have you even tried adding 11.5 and 9.5? Either you're calculation is wrong or you're just giving blind commentaries.

HarshitSatyam: your answer is correct.

Answered by HarshitSatyam

The answer to this question is

Let the sum of two consecutive numbers be x and x+2

A.T.Q
x+x+2=21
2x+2=21
2x=21-2=19
x=19/2=9.5

x=9.5
x+2=9.5+2=11.5.

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