exam Maths Puzzle Numerical Ability

Lane invested $10,000, part at 15% and part at 14%.
If the total interest at the end of the year is $1,430,
how much did she invest at 15%?

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exam Other Question

When 3 times a certain number N is added to 6, the sum is 20 more than the original number. What is the number N? One printer can print the paychecks for the employees of a company in 54 min. A second printer can print the checks in 81 min. How long would it take to print the checks with both printers operating?