Jason is hiring two construction workers, one electrician and one plumber. If the construction workers each make $100/day, the electrician makes double what a worker is paid and the plumber makes 250% of a worker's salary, how much are the overall labor costs for one day? Give the rationale and then the answer.
Let's think step by step. First find how much the electrician earns per day: $100 / day * 2 = $200 / day. Then find how much the plumber earns per day: $100 / day * 250% = $250 / day. Then find how much both workers pay together: $100 / day / worker * 2 workers = $200 / day. Then add the cost of each worker to find the total labor cost per day: $200 / day + $250 / day + $200 / day = $650 / day.. The answer is: 650.

Claire has 400 flowers in her garden. One hundred twenty are tulips, and the rest are roses. Eighty of the roses are white, while the rest are red. Each red rose is worth $0.75. How much will Claire earn if she can sell 1/2 of the total number of red roses? Give the rationale and then the answer.
Let's think step by step. Claire has 400 - 120 = 280 roses in her garden. Thus, she has 280 - 80 = 200 red roses. One - half of the red roses is equal to 1 / 2 x 200 = 100. Therefore, Claire will earn $0.75 x 100 = $75 if she can sell 1 / 2 of the total number of red roses.. The answer is: 75.

Christopher uses 1 packet of a sugar substitute in his coffee. He has 2 coffees a day. The packets come 30 to a box and cost $4.00 a box. How much will it cost him to have enough sugar substitutes to last him 90 days? Give the rationale and then the answer.
Let's think step by step. He uses 1 packet per cup of coffee and he has 2 cups a day so that's 1 * 2 = 2 packets. He wants enough to last him 90 days and he uses 2 packets a day so that's 90 * 2 = 180 packets. The packets come 30 to a box and he needs 180 packets so that's 180 / 30 = 6 boxes of sugar substitute. Each box costs $4.00 and he needs 6 boxes so that's 4 * 6 = $24.00.. The answer is: 24.