A) 80
B) 100
C) 120
D) 35
Correct Answer: C
Solution :
Total value of coins \[=Rs.\text{ }90\] Proportion of number of 50 paise, 25 paise and 10 paise coins \[=2:3:5\] Proportion of their values \[=2\times 50:3\times 25:5\times 10\] \[=100:75:50\] Sum of the proportion\[=100+75+50=225\] \[\therefore \] Values of 25 paise coins \[=Rs\frac{90}{225}.\times 75=Rs.30\] Hence, number of 25 coins\[=30\times 4=120\].
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