allery54 kg બેગ દૂર કરવાથી સરેરાશ 40 થી 38 kg સુધી ઘટે છે. મૂળ બેગ ગણતરી?
A7
B6
C9
D8
Answer & Solution
Correct answer: D. 8
જો ત્યાં n બેગ હોય, 40n − 54 = 38(n − 1), જે n = 8 આપે છે.
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