Engineering Economics
A telephone switchboard 100 pair cable can be made up with either enameled wire or tinned wire. There will be 400 soldered connections. The cost of soldering a connection on the enameled wire will be P 1.65 on the tinned wire, it will be P 1.15. A 100- pair cable made up with enameled wire cost P 0.55 per linear foot and those made up of tinned wire cost P 0.75 per linear foot. Determine the length of cable run in feet so that the cost of each installation would be the same.

1,000 feet
1,120 feet
1,100 feet
1,040 feet

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Engineering Economics
In a cash flow series:

Either an increase or decrease in the amount of a cash flow is called the gradient
The gradient in the cash flow may be positive or negative
All of these
Uniform gradient signifies that an income or disbursement changes by the same amount in each interest period

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Engineering Economics
Which one of the following definitions is correct?

The ratio of earnings before interest and taxes for a particular reporting period to the amount of interest charges for the period is called interest coverage ratio
The ratio debt-to-total assets is called Debt-to-total assets ratio
The ratio of total debt to share holder's equity is called 'debt ratio'
All of these

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