rulingbear wrote:
ssislam wrote:
rulingbear wrote:
Given that the firm needs only 1 hr of work, options C and E can be rid of. This leaves us with options A, B and D.
Type A is worth 3B but cost 4B. For simplicity, if A cost $4/hr, then B cost $3/hr.
A. 6B = $18
B. 2A+B = $13
D. 2A = $8
Hence, D is the answer.
Type A is worth 3B but cost 4B. For simplicity, if A cost $4/hr, then B cost $3/hr.
A. 6B = $18
B. 2A+B = $13
D. 2A = $8
Hence, D is the answer.
hi
beautiful I must say
anyway, did you deduce this inference "A cost $4/hr, then B cost $3/hr" from any calculation or from any shortcut...? if from any step by step method - then okay - I know it, but if you know any rule
...
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