If 9a = 762 - 672 , then the value of a is ( I ) 9 ( ii ) 143 ( iii ) 10 ( iv ) 153
Answers
Answered by
4
Answer:
Step-by-step explanation:
Let the present ages be :
Liya = x
Raja = 2x
Ages 5 years ago :
Liya = (x - 5)
Raja = (2x - 5)
According to the Question,
Five years ago Raja's age was three times Liya's age
\sf{\longrightarrow} \: (2x - 5) = 3(x - 5)⟶(2x−5)=3(x−5)
\sf{\longrightarrow} \:2x - 5 = 3x - 15⟶2x−5=3x−15
\sf{\longrightarrow} \:2x - 3x = - 15 + 5⟶2x−3x=−15+5
\sf{\longrightarrow} \:x = 10⟶x=10
Liya's present age = 10 years
___________________
★ Raja's present age =
\sf{\longrightarrow} \:2(10)⟶2(10)
\sf{\longrightarrow} \:20⟶20
Raja's present age = 20 years
Therefore, Raja and Liya are 20 and 10 years old respectively.
Answered by
2
Answer:
Answer is 10
Step-by-step explanation:
9a= 762-672
9a = 90
a = 90/9
a=10
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