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Five friends play blackjack in Las Vegas and lose an average of $100 each. If the losses of two of the friends total $38
Problem Solving
Re: Five friends play blackjack in Las Vegas and lose an average of $100 each. If the losses of two of the friends total
Total loss= 100X5= 500
Loss of other 3 friends= 500-380= 120
Average loss= 120/3= 40
- by kapil99
Thu Nov 19, 2020 8:25 am- Forum: Problem Solving
- Topic: Five friends play blackjack in Las Vegas and lose an average of $100 each. If the losses of two of the friends total $38
- Replies: 1
- Views: 327
The average (arithmetic mean) of four numbers is 5.5. When an additional number is included, the average of all five num
Problem Solving
Re: The average (arithmetic mean) of four numbers is 5.5. When an additional number is included, the average of all five
Sum of 4 numbers= 5.5X4= 22
Let the additional number be x
(22+x)/5 = 6
Therefore, x= 30-22= 8
- by kapil99
Thu Nov 19, 2020 8:21 am- Forum: Problem Solving
- Topic: The average (arithmetic mean) of four numbers is 5.5. When an additional number is included, the average of all five num
- Replies: 2
- Views: 649