exam Maths Puzzle Numerical Ability

Jill has $3.50 in nickels and dimes. If she has 50 coins, how
many of each type of coin does she have?

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exam Other Question

Carol has received a loan of 50000pesos. She has invested part of it at 10% annual interest and the remaining amount at 14%. If she receives 6400pesos at the end of one year, how much has she invested at each rate? 3/4=1-3x-2/x+1