Saved Bookmarks
| 1. |
The average of 7 numbers is 30.If the average offirst 3 numbers is 32 and the average of last 3numbers is 28, then find the 4th result? |
|
Answer» average of 7 numbers is 30 so total.of 7 numbers 7×30 = 210 average of first 3 numbers is 32 so total of first 3 numbers 32×3 = 96 average of last 3 numbers is 28 so total of last 3 numbers 28×3 = 84 so fourth number = 210 - 96 - 84 = 210 - 180 = 30 |
|