There is a very simple way of dealing with percentages.
"increase" means add
"decrease/discount/reduce" means subtract
Now, we know that the original price is 100%.
100% = 1 (like 50% = 0.5)
So if an object's price is x and it is 20% off, we get:
100%x - 20%x
Taking x common,
x(100% - 20%)
= 0.8x
Therefore, if we fist add/subtract the percentages we can multiply directly with the original to get the answer. This is as follows:
5] Increase 101 by 16%
1 + 0.16 = 1.16
So the answer is:
101 * 1.16
= 117.16
6] Decrease 36 by 21%
1 - 0.21 = 0.79
The answer is:
36 * 0.79
= 28.44
7] Let original price be x, we know it is 35% off
1 - 0.35
= 0.65
0.65x = 13
x = 20
The dividend is 2
since 2 times 12 equals to 24
1 cup = 8 ounces
3/4 cup = 8*(3/4)
3/4 cup = 6 ounces
She will add 6 ounces of water as it is equivlent to a 3/4 cup
Options C and D as there is already a relationship between the numbers 1 and 2.
Answer: 1/12 of a watermelon
Each parent will get one half of 1/6 each.
1/2 x 1/6 = 1/12
