Question

The units digit of a two digit.number is 4 times the tens digit

Answer 1

IN MATH THERE IS NO SUCH THING AS 'CLOSE'.

CLOSE ONLY COUNTS IN HORSE-SHOES & HAND-GRENADES.

MATH IS A VERY PRECISE SYSTEM WITH 1 & ONLY 1 CORRECT ANSWER.

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Y=4X [Y BEING THE UNITS DIGIT & X BEING THE TENS DIGIT.]

10X+Y=10Y+X-54 NOW REPLACE Y WITH 4X AND SOLVE FOR X IN THIS EQUATION

10X+4X=10*4X+X-54

14X=40X+X-54

14X=41X-54

14X-41X=-54

-27X=-54

X=-54/-27

X=2 ANSWER FOR THE TENS DIGIT IN THE ORIGINAL NYMBER.

Y=4*2=8 FOR THE UNITS DIGIT.

PROOF

28=82-54

28=28