Question

Ram is thrice as old as Satish. Five years ago his age is four times Satish age. Find their present ages. *

20, 60
10, 30
21, 63
45, 15​

Answer 1

$Let \: present \: age \: of \: Satish = x \: years$

$Present \: age \: of \: Ram = 3x \: years$

$\underline { \pink{ Five \: years \: ago : }}$

$Age \: of \: Satish = ( x - 5 ) \: years$

$Age \: of \: Ram = ( 3x - 5 ) \: years$

/* According to the problem given */

$3x - 5 = 4( x - 5 )$

$\implies 3x - 5 = 4x - 20$

$\implies 3x - 4x = -20 + 5$

$\implies - x = - 15$

$\implies x = 15$

Therefore.,

$\red{Present \: age \: of \: Satish(x)}\\\green { = 15\: years}$

$\red{ Present \: age \: of \: Ram } \\= 3x \: years\\= 3 \times 15 \: years \\\green { = 45\: years }$

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