exam Maths Puzzle Numerical Ability

6+y/14y+8y^2+y^3+12

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If the first and third of three consecutive even integers are added, the result is 12 less than three times the second integer. find the integers.

2x+4=12-3x-6
2x+4x=6-3x Here's my question: Bob invested $20,000, part at 14% and part at 13%. If the total interest at the end of the year is $2,720, how much did he invest at 14%? I got $11,000, but I d