Gopal sells a hot dog bun at $3.30 each and a packet of potato chips at $2.80
each. After selling for a day, he collected $3.70 more from the sale of potato
chips than the sale of hot dog buns. He sold 9 more packets of potato chips than
hot dog buns.
a) How many hot dog buns did he sell?
b) How much did he collect from the sale of potato chips?
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Hot dog buns sold => x Potatoe chips sold => x + 9
2.8(x + 9) - 3.3x = 3.7
x = 43
a/ He sold 43 hot dog buns
b/ $145.60