allery15 કામદારોની એક ટીમ એક કામ 30 દિવસમાં પૂરું કરી શકે છે. 10 દિવસ પછી, બીજા 5 કામદારો જોડાય છે. બાકીનું કામ પૂરું થવામાં લાગશે:
A18 દિવસ
B15 દિવસ
C12 દિવસ
D10 દિવસ
Answer & Solution
Correct answer: B. 15 દિવસ
બાકી રહેલું કામ 15 x 20 = 300 કામદાર-દિવસ છે, અને 20 કામદારો તેને 15 દિવસમાં પૂરું કરે છે.
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