Page 46 - รายงาน PLC สาระคณิตศาสตร์ ปี 2562
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3. จินจินซื้อหองชดราคา 212,500 บาท จายเงินดาวนไป 137,500 บาท ทเหลอผอนกับทางธนาคารอีก 24 งวด งวด
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ละเทา ๆ กัน โดยธนาคารไมคดดอกเบีย จนจนจะตองชาระคาผอนหองชดเดอนละกี่บาท
ประโยคสัญลักษณ ..........................................................................................................................................................
วิธีทํา
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4. ดีวาเชาหองพักเดอนละ 4,750 บาท เชามาเปนเวลา 9 ป จงเกิดความคดวา ถานําคาเชาที่จายไปผอนซื้อ
ิ
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้
ั
ทาวนเฮาสหลังหนึ่งจะไดครึงหนึงของราคาทาวนเฮาสพอด จงหาวาทาวนเฮาสหลงนีราคาเทาไร
ี
่
ประโยคสัญลักษณ ..........................................................................................................................................................
วิธีทํา
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