So there are 8 pints in a us gallon, 2 drops of blue to make a pint of purple (2x8x50=800) and then 3 drops of red to make purple (3x8x50=1200) I think maybe I've missed a step but (800+1200=2000) so 2000 drops of red and blue combined to make 50 gallons of purple paint.
convert yards to feet and minutes to seconds
1yard=3ft
16.8yards times 3ft/1yd=50.4ft
1minute=60 seconds
12minutes times 60seconds/1min=720seconds
feet per second=50.4ft/720sec=0.07ft/sec
answer is 0.07ft/sec
890×(1+0.187÷12)^(12)−890×(1+0.125÷12)^(12)
=63.61 saved
I’m just going off of what I was told in fifth grade, and we were told it was finger nails. Hope this helps!
Assuming you mean y=10x+150 and y=20x+115, you need to use a simultaneous equation, because you have two equations with two unknowns (x and y)
rearrange so
10x-y=-150
20x-y=-115
multiply the top by -1, so that if we add the two lines together, the y will cancel out
-10x+y=150
20x-y=-115
add the two lines together
10x=35
x=3.5
so the time is 3 and a half weeks
then we can sub in x to find y
20x-y=-115
20(3.5)-y=-115
70-y=-115
-y=-185
y=185
so 185 tickets were sold !
you can sub these values into your original equations to check your answer :)
