The cost is what the manufacturer spends to make something
It equals 70 kilograms.
Happy studying ^_^
1 hour = 60 minutes
15 minutes = (60/15) = 1/4th of an hour
1/4 = 0,25
<span>15 minutes is 25% of an hour</span>
Associative property of multiplication
(note, ab means a times b)
a(bc)=(ab)c
allows us to move parenthasees around when all multiplying
