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?

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.