Question:The average weight of `9`mangoes increases by `20` g if one of them weighting `120`g is replaced by anpther.The weight of the new mango is : 

A `180 g` 
B `200 g` 
C `260 g` 
D `300 g` 

+ Answer
D 

+ Explanation
Total weight increased 

`= (9 xx 20) gm`

`= 180 gm`

Weight of new mango

`(120 + 180) gm`

`= 300 gm`

+ Report

Irin Moni

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