Down the Drain: In a typical 5-minute shower, 30 gallons of water flow down the drain. How much water is used after 10 minutes?
1 answer:
You might be interested in
so.. as you can see, we use the decimal notation for the percentages... 65% is just 65/100 and 50% is just 50/100 and so on
so.. whatever the salted amounts are, we know they'll add up to (x+175)(0.50)
thus (0.30x) + (175)(0.65) = (x+175)(0.50)
solve for "x"