Ana is 7 years old than tony.the sum of their ages is 49.how old is ana
Answers
Let the age of Ana be x years and the age of Tony be y years old .
x = y + 7
x - y = 7 ......................(1)
x + y = 49 ....................(2)
Adding equation (1) and (2) we get,
x - y = 7
x + y = 49
-----------------
2x = 56
x = 56/2
x = 28
Now,put x = 28 in equation no. (2)
x + y = 49
28 + y = 49
y = 49 - 28
y = 21
Therefore, Ana is 28 years old and Tony is 21 years old.
x + y = 49
28 + 21 = 49
49 = 49
L.H.S = R.H.S
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Let the age of Ana be x years and the age of Tony be y years old .
Accordingto1stcondition
x = y + 7
x - y = 7 ......................(1)
Accordingto2ndcondition
x + y = 49 ....................(2)
Adding equation (1) and (2) we get,
x - y = 7
x + y = 49
-----------------
2x = 56
x = 56/2
x=28
Now,put x = 28 in equation no. (2)
x + y = 49
28 + y = 49
y = 49 - 28
y = 21
x=21
Therefore, Ana is 28 years old and Tony is 21 years old.
Confirmation
x + y = 49
28 + 21 = 49
49 = 49
L.H.S = R.H.S
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