Question
Which of the following is considered an inappropriate
medium for plant growth?Solution
Concrete is a solid, non-porous construction material that provides no room for roots or water. Growing media must be porous to allow for life-sustaining gas and water exchange.
A can complete a job in 15 days; B in 20 days. They work together for 5 days. What fraction remains?
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5 girls can do a piece of work in 9 days, 4 boys can do the same piece of work in 8 days, 6 men do the same piece of work in 2 days and 4 women can do t...
If A can complete a job in 15 days and B can complete the same job in 10 days, and they work together for 4 days before A leaves. How many more days wil...
