I WANT SOLUTION AND EXPLANATION ANSWER IS GIVEN AT LAST!!! PLEASE HELP ME PLEASE

QUE 1:- The difference between a 2-digit number and the number formed by reversing its digits is 45. If the sum of the digits of the original number is 13, then find the number.

ANSWER :- 49

The difference between a 2-digit number and the number formed by reversing its digits is 45. If the sum of the digits of the original number is 13, then find the number.

The difference between a 2-digit number and the number formed by reversing its digits is 45. The sum of the digits of the original number is 13.

130-9x-(9x+13) = 45

or, 130-9x- 9x-13 = 45

or, -18x = 45-130+13

or, -18x= -72

or, x = 72/18 = 4

or, x = 4

The number is 94.

I think the answer you have given isn't right. The answer should be 94.

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you