A) 798
B) 789
C) 978
D) 987
Correct Answer: A
Solution :
Let the number of coins of Rs. 1 = 5x |
Number of coins of 50 paise = 6x |
And number of coins of 25 paise = 8x |
According to question, |
\[5x\times 100+6x\times 50+8x\times 25=420\times 100\] |
\[\Rightarrow 500x+300x+200x=4200\] |
\[\Rightarrow 1000x=42000\Rightarrow x=42\] |
\[\therefore \]Number of coins of \[\text{Rs}\text{.1 =5}\times \text{42=210}\] |
Number of coins of 50 paise \[=6\times 42=252\] |
Number of coins of 25 paise \[=8\times 42=336\] |
\[\therefore \]Total number of coins |
\[\text{=210+252+336=798}\] |
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