Keith won a cash prize in an art competition. He gave his mother 2/5 of the money he won. Of the remainder, 1/4 was given to his sister, and 2/3 was given to his brother. He had $15 left. How much was Keith’s cash prize?please give me an explanation (I need it)

1 answer
Question:

Keith won a cash prize in an art competition. He gave his mother 2/5 of the money he won. Of the remainder, 1/4 was given to his sister, and 2/3 was given to his brother. He had $15 left. How much was Keith’s cash prize?
please give me an explanation (I need it)

Answers

Answer:300 dollarsStep-by-step explanation:Let the original amount = xx - 2/5x  was what his mother's share looked.5/5 x - 2/5 x3/5x is what is left.3/5 x - 1/4 * 3/5 x - 2/3x * 3/5 = his sister's share and his brothers3/5x - 1/4*3/5 x - 2/3 * 3/5 = 153/5x * (1 - 1/4 - 2/3) = 153/5 x 5/60 = 1515 / 300 * x = 151/20  x = 15x = 15 * 20x = 300

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