A) 36
B) 42
C) 45
D) 48
Correct Option - C
ExplanationF=3S F+15=2(S+15) Solving the two equations, F=45
A) 10
B) 11
C) 15
D) 18
Correct Option - B
ExplanationN=A+9 (A-2)=(1/2)*(N-2) 2A-4=N-2 2A-4 = A+9-2 A = 11
A) 6
B) 9
C) 11
D) 14
Correct Option - A
ExplanationR+R+F=47 F-R=29 Solving the two equations, R=6
A) 12
B) 18
C) 6
D) 15
Correct Option - D
ExplanationLet their present ages be 3x,5x and 7x. Sum of their ages before 5 years = 3x-5+5x-5+7x-5 = 15x-15 = 60 Solving, x=5 Age of the youngest = 3x = 15
A) 29
B) 39
C) 48
D) 86
Correct Option - B
ExplanationA+10 = 2(B-10) A=B+9 Solving the two equations, B+19=2B-20 B=39
A) 20
B) 25
C) 28
D) 30
Correct Option - B
ExplanationA=S+3 S=M+5 A+S+M=73 S+3+S+S-5=73 S=25
A) 25
B) 22
C) 20
D) 27
Correct Option - B
ExplanationA-C=B/2 A-B=C/6 B+C=32 Solving the three equations, A=22