The average of a,b,c is 20 and that of b,c,d is 25, if d=30, then the value of a is-
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Q:
The average of a,b,c is 20 and that of b,c,d is 25, if d=30, then the value of a is-
- 125false
- 245false
- 330false
- 415true
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