| The average weight of 9 mangoes increased by 20 g. If one of them weighing 120 g replaced by another, then the weight of new mangoes is |
A) 180 g
B) 200 g
C) 260 g
D) 300 g
Correct Answer: D
Solution :
| Let the average weight be x g. |
| Then, \[9\times (x+20)=9\times x-120\]+ Weight of new mango |
| \[\Rightarrow \]\[9x+180=9x-120+\]Weight of new mango |
| Weight of new mango \[=180+120=300g\] |
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