Question

12. Rahul is 5 years old. His father's age is 31 years. After how many years will his father's age be three times
of his age?
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Answer 1

Answer:

8 YEARS ....................

Step-by-step explanation:

Answer 2

$let\:father's\: age\:be\: 3\:times\:Rahul's\:age\:after\:x\:yrs\\\\so,\\\\father's age +x = 3(Rahul's age +x)\\\\ =>\:31+x=3(5+x)\\=>\:31+x=15+3x\\=>\:2x=16\\=> \:x=16/2=8\\\\\\when\:Rahul's\:age\:will\:be\:8\: yrs,\:his\: father's\: age\: willl\\ \:be \:3 \:times\: Rahul's\: age.\\\\\tt{Hope\:it\:helps\:you!}$