Blue silk

There are four rolls of blue silk. Each roll holds 6 3/4 yd of silk. It takes 3/5 of a yard to make one necktie. How many neckties can be made from the four rolls of blue silk?

Correct answer:

n =  45

Step-by-step explanation:

s=4 643=4 427=44 27=4108=27 yd o=3/5=53=0.6 yd  n=s/o=27/53=27:53=27 35=327 5=3135=45

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