Math help. Show steps, thank you.?
2016-06-19 5:40 pm
Six milliliters cubed of soil containing twenty five percent sand was mixed into nine milliliters cubed of soil containing twenty percent sand. What is the sand content of the mixture?
回答 (1)
2016-06-19 5:49 pm
Volume of sand
= (6 × 25% + 9 × 20%) cm³
= 3.3 cm³
Volume of soil
= (6 + 9) cm³
= 15 cm³
Sand content of the mixture
= (3.3/15) × 100%
= 22%
= (6 × 25% + 9 × 20%) cm³
= 3.3 cm³
Volume of soil
= (6 + 9) cm³
= 15 cm³
Sand content of the mixture
= (3.3/15) × 100%
= 22%
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