Engineering Economics
Liquidity ratios are used:

To measure a firm’s ability to meet short-cut obligations
To compare short term obligations to short-term resources available to meet these obligations
To obtain much insight into the present cash solvency of the firm and the firm
All of these

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

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

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