A number plus four-and-a-half times that number minus a quarter of that number is 19. What is the number?
A winner will be announced a few days after the first correct answer.
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Sunday, September 5, 2010
Contest #1 Results
Congratulations to Abhishek Duggal of Hawaii who won DVBE’s first Numbers Contest.
Here is the solution:
Let x=first number,y=second number,z=third number
x+y+z=99
x=y ÷2 or y=2x
z=3y= 3(2x)=6x
x+2x+6x=99
9x=99
x=11
Do you see how English is translated into equations? The DVBE program gives you lots of practice with these translations.
Here is the solution:
Let x=first number,y=second number,z=third number
x+y+z=99
x=y ÷2 or y=2x
z=3y= 3(2x)=6x
x+2x+6x=99
9x=99
x=11
Do you see how English is translated into equations? The DVBE program gives you lots of practice with these translations.
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