সব প্রশ্নে ফিরে যান
Math
The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg . What might be the weight of the new person?
A) 76 kg
B) 76.5 kg
C) 85 kg
সঠিক উত্তর
D) 70 kg