a number consist of two digits whode sum is 15 .

Question

a number consist of two digits whode sum is 15 . if 9 is added to the number then the digits change places find the number​

Himanshu saxena · Accepted Answer

Lets, say the original number has “x” at the 10th place and “y” at the one’s place,thus the number can be written as (10x + y)also, (x + y = 15; given) …... Eq(i)also, (10x + y +9 = 10y + x) ….. Eq(ii)Solving Eq(ii) gives us,(x – y = -1) ...... Eq(iii)Adding, Eq(i) and Eq(iii), we get x= 7 thus, y=8Hence, the original number is (10 * 7 + 8 = 78). The original number is 78.

Magical Mathematics[Interesting Approach]> a number consist of two digits whode sum ...

a number consist of two digits whode sum is 15 . if 9 is added to the number then the digits change places find the number

Ayush , 4 Years ago

Himanshu saxena

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Magical Mathematics[Interesting Approach]> a number consist of two digits whode sum ...

a number consist of two digits whode sum is 15 . if 9 is added to the number then the digits change places find the number​

Ayush , 4 Years ago

Himanshu saxena

LIVE ONLINE CLASSES

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