A) \[1:1\]
B) \[2:3\]
C) \[3:5\]
D) \[4:5\]
Correct Answer: C
Solution :
Let the amount of R and T are 2x and 5x respectively. By question, \[\therefore \] \[2x+5x=21\] \[\Rightarrow \] \[7x=21\] \[\therefore \] \[x=3\] \[\therefore \] amount of \[R=2x=2\times 3=6\text{ }kg.\] amount of \[T=5x=5\times 3=15\text{ }kg.\] Now, 3kg more R is mixed in mixture. \[\therefore \] Ratio of R and \[T=\frac{(6+3)\,kg}{15\,kg}\] \[=\frac{9}{15}=\frac{3}{5}=3:5\]You need to login to perform this action.
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