x + 0.15x = 3000
1.15 x = 3000
x = 3000/1.15
x = 2608.696 (to 3 decimal places only)
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% increase = 100*(3100/3000 - 1) = 3.33..%
It is a 50% increase
To find 31 percent of a number, multiply the number by 0.31. In this instance, 0.31 x 3000 = 930. Therefore, 31 percent of 3000 is equal to 930.
To find 7 percent of a number, multiply the number by 0.07. In this instance, 0.07 x 3000 = 210. Therefore, 7 percent of 3000 is equal to 210.
To find 11 percent of a number, multiply the number by 0.11. In this instance, 0.11 x 3000 = 330. Therefore, 11 percent of 3000 is equal to 330.