How much yarn does it take to knit a scarf

PLS HELPPPP I NEED THIS GRADE PLSSSSS…The length of yarn needed to knit one hat is half the length of yarn that is needed to knit a scarf. It takes three times as much yarn to knit a

child’s sweater as it does to knit one hat.
a. If It takes 400 yards of yarn to knit a scarf, how much yarn is needed to knit a child’s sweater? Use tape diagrams and equations to solve
the problem. Use paper to show your work. Let h represent the number of yards of yarn needed to knit a hat.
It will take yards of yarn to knit a child’s sweater.
b. How many total yards of yarn will be needed to knit a hat, a scarf, and a child’s sweater?
It will take yards of yarn to knit a hat, a scarf, and a child’s sweater

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