Question
In a stationery kiosk, a box of pencils costs thrice as much as a manual. Mrs Neo spent 13 of her money to buy 7 boxes of pencils. She then spent 37 of her remaining money to buy some manuals and had $50.40 left. How much does each manual cost?
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In a stationery kiosk, a box of pencils costs thrice as much as a manual. Mrs Neo spent 13 of her money to buy 7 boxes of pencils. She then spent 37 of her remaining money to buy some manuals and had $50.40 left. How much does each manual cost?