A) 216
B) 196
C) 150
D) 250
Correct Answer: A
Solution :
Let total number of pens = x She gave blue pens \[=\frac{3}{4}\left( \frac{2}{3}x \right)\,=\frac{1}{2}x\] She gave red blue \[=\frac{1}{4}\,\left( \frac{1}{3}x \right)=\frac{1}{12}x\] Number of \[=\frac{1}{2}x+\frac{1}{12}\,x=90\] Pens left \[\frac{5x}{12}=90\] \[x=\frac{90}{5}\times 12\] \[=18\times 12=216\] No. of pens she bought = 216You need to login to perform this action.
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