Early one morning sandy took out one half of the coins from her coin bank, and in the evening she put in 20 coins. the next morning she took out one third of the coins in the bank, and that evening she put in 4 coins. the next morning, she took out one half the coins in the bank, leaving 15 coins. how many coins were in the bank to begin with?

answer:

125 yards

explanation:

75+50=125. that is my answer

why are you giving so many marks make your marks less and make a question list so that i can understand your question very nicely

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6