I do suppose that you refer to adding these quantities:
6/1 + 21 = 6 + 21 = 27
<span>and
6/10 + 21
</span>= 3/5 + 21
= 3/5 + 105/5
<span>= 108/5</span>
3 Liters. One liter is 1000 milliliters so 3 is 3000
y will decrease as well
direct variation is
y = kx where k is the constant of variation ( k > 1)
Amount used = $25 - $23.35 = $1.65
Number of minutes used = $1.65 ÷ $0.11 = 15 mins
Answer: 15 mins
