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How many liters of 20% alcohol solution must be mixed with a 60% solution to obtain 40 litres of a 35% solution?

A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce and the sweaters take 14 hours. The labor available is limited to 40 hours per week and the total production capacity is 5 items per week. Write a system...

The number N, in millions, of hearing impaired individuals of age x can be approximated by: N = -0.00006x^3 + 0.006x^2 - 0.1x + 1.3 Approximate to the nearest million the number of hearing impaired individuals of ages 50 - 60. N = (squiggly lines) ___________ million...