A) 5.32
B) 6-52
C) 4.68
D) 3-58
Correct Answer: C
Solution :
Suppose the present rate of 1 pen\[=Rs.1.3x\] Then, \[\frac{7.8}{x}-\frac{7.8}{1.3x}=6\] \[\frac{7.8\times 0.3}{1.3x}=6\] \[x=0.3\] Now, the present rate of pens per dozen \[=0.3\times 1.3\times 12\] \[=-Rs.\,\,4.68\]You need to login to perform this action.
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