Lizzy: Julie wants to give her favorite cousin a $2345 mountain bike for his birthday. So far, she has saved $1500. Since the birthday is still a few weeks away, Julie has time to save even more. She plans on mowing 20 lawns, delivering 600 newspapers, and walking 24 of her neighbors’ dogs. She is paid $20 for each lawn, 40 cents per newspaper, and $15 per dog. After purchasing the bike, how much money will Julie have left?.
Me: Hmmm, let me think. I think this is the detailed solution:
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Mowing lawns will earn Julie 20 * 20 = 400 dollars. Her earnings, in dollars, from delivering newspapers will be 600 * 40 / 100 = 240 dollars. After walking 24 of her neighbor’s dogs, she will earn 24 * 15 = 360 dollars. She will therefore earn a total of 400 + 240 + 360 = 1000 dollars. Combining earnings from her job with her savings will give Julie 1000 + 1500 = 2500 dollars. Subtracting the cost of the mountain bike from the total will leave Julie with a balance of 2500 - 2345 = 155 dollars. Final answer: 155.
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