allery54 কেজিৰ বেগ এটা আঁতৰাই দিলে গড় 40 কিলোগ্ৰামৰ পৰা 38 কিলোগ্ৰামলৈ হ্ৰাস পায়। মূল বেগ গণনা?
A7
B6
C9
D8
Answer & Solution
Correct answer: D. 8
যদি n বেগ আছিল, তেন্তে 40n − 54 = 38(n − 1), যাৰ ফলত n = 8 পোৱা যায়।
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