alleryA બનાવે છે 6 એકમો/h; B 4 એકમો/h બનાવે છે અને 2 h પછીથી શરૂ થાય છે. Aની શરૂઆતથી 92 એકમો ક્યારે પૂર્ણ થાય છે?
A10 h
B9 h
C11 h
D12 h
Answer & Solution
Correct answer: A. 10 h
જો A t કલાક કામ કરે છે, તો 6t + 4(t − 2) = 92 t = 10 કલાક આપે છે.
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