Asked by Willai

Each pen costs 3 times as much as each eraser. If the total cost of 2 pens and 4 erasers is $6.30, find the cost of each pen.
Answered by Willai
Some grapes are shared between Mary and Lincoln in the ration 4:5. If Lincoln receives 0.31kg more grapes than Mary, how many kilograms of grapes does Mary recieve?
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If Kenny spends $4 a day, his money will last for 3 weeks. If he spends $2.75 a day, how much will be left after 3 weeks?
Answered by Willai
The average height of 3 boys and 4 girls is 1.29m. If the average height of the 3 boys is 1.33m, find the average height of the 4 girls.
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