Julie needs 3 lengths of string that are each 6 inches long. Marlene needs 7 lengths of string that are each 8 inches long.
1 answer:
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18 hours.
Proportions and stuff.
= 
Cross multiply,
204x = 918 * 4
204x = 3672
/204 /204
x = 18
18 hours.
Proportions and stuff.
Cross multiply,
204x = 918 * 4
204x = 3672
/204 /204
x = 18
18 hours.