Math
posted by Simran kaur .
In a 2digit no. ,the face value of the digit at the tens place is four times dat of the digit at ones place. If 54 is substrctd frm the no. ,the digit are reversed.find the no.
Ans is 82

t = 4u
10t+u  54 = 10u+t
10*4u+u54 = 10u+4u
40u+u54=14u
26u=52
u=2
so, the number is 82 
Thnx..

Sory i don't undrstnd

Plz solve dis qustn again in simple method bcz i didn't undrstnd