Rate for Sally is 1 room per 8hrs
rate for Steve is 1 room per 7hrs
combined rate:
1/8 + 1/7 = 1/T
7/56 + 8/56 = 1/T
15/56 = 1/T
56/15 = T
3 11/15 = 3 hrs 44 min
Answer:
y = ½x
Step-by-step explanation:
y = ½x
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multipl 10×2=20 y ese es el resultado entendes ?
Answer:boy
Step-by-step explanation:boy