Answer: -129/500
Explanation:
Answer:
Step-by-step explanation:
first ask teacher
second be polite
third ask help from your peers
A decrease by 30%, means that the price is now 70% of the original price ( 100% - 30% = 70%)
To find the original price divide the new price by the percent of the original price it is now.
147 / 0.70 = 210
The original price was £210
For the first one he has 3100 that comes out of his monthly payment so look for the one that has 3100 or more on his paycheck and that will be the month that he has enough to pay his monthly expencize. I hope that is right im pretty sure it is.
I wish I could help you with the second one but the way I would explain it is to confusing but I hope you find help on that one! have a good day
Answer:
As
parts per million can be calculated by applying formula Ppm=(mass of solute/mass of solution)×1,000,000
In given condition
Mass of solute which is NaCl is 284g
Mass of solution which is watervis 100g
Ppm=284/100×1,000,000
=284000ppm
I hope it's helpful!