Engineering Economics
Pick up the correct reason for making conceptual (or preliminary) estimate from the following:

To compute target estimate for the owner while drawing and specifications are in initial stage
To check quotations from contractors and/or sub-contractors
To have a check on a definitive cost estimate
All of these

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Engineering Economics
Current ratio is:

(Current assets + loans advances)/Current liabilities
None of these
Current assets/Current liabilities
(Current assets + loans)/Current liabilities

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