The average weight of Somdev, Gurdeep and Ritu is 85 kg. If the average weight o

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Question
The average weight of Somdev, Gurdeep and Ritu is 85 kg. If the average weight of Somdev and Gurdeep be 79 kg and that of Gurdeep and Ritu be 73 kg, then the weight of Gurdeep is
Options
A. 78
B. 49
C. 72
D. 90

Correct Answer

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1. A bag contains 25 paise, 50 paise and 1 Rs coins. There are 220 coinsinall and the total amount in the bag is Rs. 160. If there arethrice as many 1 Rs. coins as there are 25 paise coins, then what is the number of 50 paise coins?
Options
A. 60
B. 40
C. 120
D. 80

Correct Answer: 60

Explanation:

Let there be x one rupee coin, y 50 paise coin, z 25 paise coinx + y + z = 220......(i)

Total amount = 160

Now, x + (y/2) + z = 160 ......(ii)

?4x + 2y + z = 640

Thrice as many 1 re coin as 25 paise

?x = 3z ......(iii)

On solving equation (i), (ii) and (iii), we get

z = 40x= 3* 40 = 120y = 220 ?(120 + 40 ) = 60

So, 50 paise coin =60