if ppm means part per million,
1000 ppm = 1000 p 1000000 = 1 p 1000 = 0.1%
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To find 15 percent of a number, multiply the number by 0.15. In this instance, 0.15 x 1000 = 150. Therefore, 15 percent of 1000 is equal to 150.
the answer is 7/1000 to find the answer you can take the percent (.7%) and convert it to a fraction by dividing it by 100. you will get .7/100. this can be simplified by multiplying the top and the bottom of the fraction by 10. you will get 7/1000
1000
1000 x (1.025)8 which is $1218.40.
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