the school home in westerwald has 3-bed rooms, 4-bed rooms and single rooms for teachers. there are a total of 31 rooms. the number of 4-bed rooms is 1 greater than the number of 3-bed rooms

step-by-step explanation:

im not sure what the answer is

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134.6 us dollars

step-by-step explanation:

1 us dollar = 1.33 canadian dollars

so, 150 us dollars = 150 × 1.33 = $199.5.

in canada, the money mitchell spent = 20 canadian dollars.

remaining canadian dollars with him = 199.5 - 20 = 179.5.

after mitchell returned to us, he exchanged the remaining canadian dollars to us dollars.

179.5 canadian dollars = 179.5 × 0.75 = 134.6 us dollars.