Q. Mayerlin is the middle of three siblings whose ages are consecutive even integers. If the sum of their ages is 66, find Mayerlin's age.Answer:
Set Variables: Let x be the age of the youngest sibling. Since the siblings' ages are consecutive even integers, Mayerlin's age would be x+2 and the oldest sibling's age would be x+4.
Write Equation: The equation representing the sum of their ages is 66 can be written as: x+(x+2)+(x+4)=66
Simplify Equation: Simplify the left side of the equation:x+x+2+x+4=66Combine like terms:3x+6=66
Isolate Variable: Isolate the variable term:3x+6−6=66−63x=60
Solve for x: Solve for x:3x=60x=360x=20
Calculate Mayerlin's Age: Since x is the age of the youngest sibling, Mayerlin's age, being the middle sibling, is x+2: Mayerlin's age = 20+2=22