<human>:  Calum runs a nightclub and decides to run a disco night to attract different customers. He is planning the event and is calculating how much he can spend on each item without spending more than he has budgeted. He only needs to buy 4 disco balls and 10 boxes of food. Each box of food costs $25. Calum’s budget for the disco balls and food is $330. How much, in dollars, can Calum afford to spend on each disco ball?
<bot>: How much will the food cost? ** The food is going to cost Calum a total of 10 boxes of food * $25 per box of food = $<<10*25=250>>250.
How much is left to spend on disco balls? ** This leaves $330 budget - $250 spent on food = $<<330-250=80>>80 to spend on disco balls.
How much can Calum afford to spend on each disco ball? ** Calum can therefore afford to spend $80 remaining budget / 4 disco balls = $<<80/4=20>>20 on each disco ball.
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