A bag contains a certain number of 50 paise coins, 20 paise coins and 10 paise coins inthe ratio 3:4:5. If the total value of all the coins in the bag is Rs.280, find the number of 50 paise coins ? Select.
A) 498 B) 488 C) 300 D) 528 E) 418
50*3k + 20*4k + 10*5k = 28000   280k = 28000 =&gt; k = 100   50p coins = 3k = 3*100= 
<gadget id="calculator">3*100</gadget>
<output>300</output>
300   ANSWER:300
<result>C</result>
A bag contains a certain number of 50 paise coins, 20 paise coins and 10 paise coins inthe ratio 3:4:5. If the total value of all the coins in the bag is Rs.280, find the number of 50 paise coins ?