Anew storm drainage system must be constructed right away to reduce periodic flooding that occurs in a city that is in a valley. five mutually exclusive designs have been proposed, and their present worth (in thousands of dollars) of costs and benefits are the following. system 1 2 3 4 5pw of cost $1000 $4000 $4000 $10,000 $14,000pw of benefits $8000 $8000 $14,000 $16,000 $24,000which sytem has the greatest b-c ratio?

Design 1

Explanation:

Benefit-Cost ratio is used to determine the net benefit pre dollar invested in a project.

Benefit-Cost ratio formula =  PW of benefits / PW of cost

Design 1; 8000/1000 = 8

Design 2; 8000/4000 = 2

Design 3; 14000/4000 = 3.5

Design 4; 16000/10000= 1.6

Design 5; 24000/14000= 1.7

Therefore, from the above calculations, design 1 has the greatest Benefit-Cost ratio.

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.

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