Answer:
12 hours
Step-by-step explanation:
Create a proportion where x is how long the 21 cm candle can burn for:
= 
Cross multiply and solve for x:
14x = 168
x = 12
So, the 21 cm tall candle can burn for 12 hours
Answer:
the answer is 13 units
Step-by-step explanation:
Answer is <span>1 1/9 cups
3/4 lbs ..............5/6 cups of cinnamon
1lb........................? cups of cinnamon
5/6 / 3/4
= 5/6 * 4/3
= 20/18
= 10/9
= 1 1/9</span>
Percent formula : is/of = %/100
is = 12
of = 60
% = x
now we sub
12/60 = x/100
cross multiply
(60)(x) = (12)(100)
60x = 1200
x = 1200/60
x = 20
check..
0.20(60) = 12
12 = 12 (correct)
so 20% of 60 is 12
Answer:
2 feet
Step-by-step explanation:
Since each piece of wood is 2/3 of a foot tall, and there are two pieces of wood stacked on top of each other, you need to add 2/3 twice to get the total height of the pile.
2/3 + 2/3 = 6/3
6/3 = 2
Therefore, the pile is 2 feet tall.
