Answer:
PETER 18
POL 21
MARY 26
Step-by-step explanation:
I dont know if I did in the right way...
1st: Take any number for peter's or pol's age
I took 18 for peter, RANDOMLY
2nd: Subtract the age from the total to get pol's age
39-18=21 Hence, pols age is 21
3rd: Subtract peter's age from the total to get marys age
47-18=26 Hence, Marys age is 26
4th: Add the age of pol and mary
aaand, you get 47
Done!
Hope it helps!!!
Answer:
Peter is 18, Pol is 21 and Mary is 26 years old.
Step-by-step explanation:
Pe + Po = 39 .......A
Pe + M = 44 .......B
Po + M = 47 ........C
Equation B - Equation C gives:
Pe - Po + M - M = 44 - 47
Pe - Po = -3
Add this equation to A:
2Pe + Po - Po = 39 - 3
2Pe = 36
Pe = 18.
Substituting for Pe in B
18 + M = 44
M = 44 - 18 = 26.
Substituting for M in C:
Po + 26 = 47
Po = 47 - 26 = 21.
