exam Maths Puzzle Numerical Ability

Social Science. If there are 6 *10^9 people on Earth and there is enough freshwater to provide each person with 8.79 * 10^5 L, how much freshwater is on the Earth?

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write as a single logarithm
log2 3+og2 y^5-3log2x The width of a rectangular gate is 2 meters(m) larger than its height. The diagonal brace measures the square root of 6. find the width and height.