leniar equations in 2 variables
Asked by akshatverma | 9th Aug, 2009, 05:52: PM
let the ten's digit be x and the unit's digit be y.
so the number is 10x+y
acc to question,
from (i) we get,
substituting this value of x in (ii) we get,
solving this quadratic, we get,
a digit can't be a fraction so y can't be -1/2
so y must be equal to 4.
so x=2y gives
so the reqd num is 84.
Answered by | 9th Aug, 2009, 08:02: PM
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