exam Maths Puzzle Numerical Ability

Business and finance. A country exported $60,000,000 less than it imported, creating a negative trade balance.
I need to come up with a number not sure how to Please help!!

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exam Other Question

a contractor has a 24-pound mixture that is no-fourth cement, and three-fourths sand. How much of a mixture that is half cement and half sand needs to be added to produce a mixture that is one-third cement? Solve 2x^2e^-x= 18e^-x for x