Question 536222
"marks dad is 3 times as old as mark . The sum of their ages is 48 , how old is mark?"


x = Mark's age
3x = Mark's dad's age {Mark's dad is 3 times Mark}


x + 3x = 48 {sum of ages is 48}
4x = 48 {combined like terms}
x  = 12 {divided both sides by 4}


Mark is 12
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