exam Maths Puzzle Numerical Ability

What amount of each mixture, one 95% alcohol and the other 15% alcohol, must be used to make 10 liters of a mixture which is 45% alcohol? What equations will express this problem?

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exam Other Question

A map has a scale of 1 centimeter : 8 kilometers. Use the given actual distance to find the distance on the map.

29. 176 km

Any help with this equation would be Greatly</b> appreciated. (3-^3a-^2b^5 / c-^3d-^4) write with positive exponents