Mathematics, 28.07.2020 18:01 irene3492

N students joined the radio control club. Some had boats, some had airplanes, and some had cars. They divided into 3 equal groups according to what model each one had. Ten more students joined the radio-controlled airplane group. There are 15 students in this group now. How many students joined the radio control club in the beginning?

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N students joined the radio control club. Some had boats, some had airplanes, and some had cars. The...

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