In 5 years time,Reshma will be three times old as she was 9 years ago.How old is she now
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Answered by
23
hola!!
Let x be the Reshma's age now.
9 years ago Reshma age was (x-9).
After 5 years Reshma's age will be (x+5).
According to the condition, you have an equation
x+5 = 3*(x-9).
Solve it by simplifying step by step:
x + 5 = 3x - 27,
x - 3x = -27 - 5,
-2x = -32,
2x = 32,
x = 32/2 = 16.
Answer. Reshma is 16 years old now.
Let x be the Reshma's age now.
9 years ago Reshma age was (x-9).
After 5 years Reshma's age will be (x+5).
According to the condition, you have an equation
x+5 = 3*(x-9).
Solve it by simplifying step by step:
x + 5 = 3x - 27,
x - 3x = -27 - 5,
-2x = -32,
2x = 32,
x = 32/2 = 16.
Answer. Reshma is 16 years old now.
Answered by
3
Let Reshma's present age be denoted by the variable 'x'.
'smx+5' is used to denote her age after 5 years and 'x-9' is used to denote her age 9 years ago.
Then, x+5=3(x-9).
Opening brackets:
x+5=3x-27.
Sending x to LHS from RHS becomes -x and -27 from RHS to LHS becomes 27:
5+27=3x-x.
32=2x.
Transposing *2 to LHS making it /2:
32/2=x.
x=16.
Therefore Reshma's present age is 16 and after 5 years she will be x+5=21 years old and before 9 years she was x-9=7 years old.
'smx+5' is used to denote her age after 5 years and 'x-9' is used to denote her age 9 years ago.
Then, x+5=3(x-9).
Opening brackets:
x+5=3x-27.
Sending x to LHS from RHS becomes -x and -27 from RHS to LHS becomes 27:
5+27=3x-x.
32=2x.
Transposing *2 to LHS making it /2:
32/2=x.
x=16.
Therefore Reshma's present age is 16 and after 5 years she will be x+5=21 years old and before 9 years she was x-9=7 years old.
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