After an oil spill, the ratio of
contaminated water samples to clean
water samples in the oc...
Mathematics, 19.09.2021 05:10 ShlomoShekelstein
After an oil spill, the ratio of
contaminated water samples to clean
water samples in the ocean is 7:2. Jai
found 140 clean samples. How many
fewer samples were clean than were
contaminated?
A.70
B.140
C.350
D.490
Answers: 1
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