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a number consist of two digit whose sum is 8. if 18 is added to the number the digits change their places . find the number

Note by Pooja Arora
4 years, 1 month ago

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The number is 35. · 4 years, 1 month ago

how?? · 4 years, 1 month ago

pls give me step by step procedure... · 4 years, 1 month ago

$$x$$ is the digit at tens place and $$y$$ at units place.

$$x+y=8$$

$$10x+y+18=10y+x$$

Just solve these equations. · 4 years, 1 month ago

thanku so much..... · 4 years, 1 month ago

agreed...:) · 4 years, 1 month ago

find the pairs of one-digit numbers whose sum is 8: $$(1,7),(2,6),(3,5)$$ then the possibilities are 17,26 and 35 by trial and error we get 35 · 4 years, 1 month ago