6. A building project takes 12 men 54 days to complete.
(i) How long will it take 9 men to finish the same project?
(ii) Given that the project must be completed in 36 days, find how many men are needed.

7. A shop employs one man and one woman as shop assistants. the man works for 10 hours a day and the woman works for 8 hours per day, and their wages per hour are in the ratio 7:5.If the woman receives $24 per day, find the man's daily wage.

8. To paint a house, John stairs 6 days, Peter takes 4 days, and Paul takes 12 days. How many days will they take if they work together?

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

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step-by-step explanation:

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-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation

thats one

step-by-step explanation: