book Maths Puzzle Numerical Ability

Evelyn intends to give her 12 good friends a treat at the school canteen. Her friends can have either a bowl of noodles or a plate of chicken rice. A bowl of noodles costs $1.20 wh

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book Other Question

The Flicks Video Store bought several VCRs.
Each recorder cost them $220.
They gave away one recorder in a prize drawing, and sold the others for $290 each.
Their profit was $1250.
How many recorders did they sell? x+2x^2/x+2