7 - (7 times 0.2)
40% off 7 dollars = 60% of 7 dollars = 7*60/100 = 4.20 dollars.
7 dollars - giving you a new total of 28 dollars. All without the aid of a calculator !
Not a lot to go on here. If the meal was 20 dollars and the tip was 7 dollars, that's 35 percent. Very generous. If the 7 dollar tip was 20 percent of the meal, the meal was 35 dollars.
$63 dollars. 10 percent of 70 is 7. 70-7 is 63.
"20% off" means "80% still there".0.8 x 7 = 5.60
7
193 * .7 = 135.1
5.60
5.6 pounds
5.6 pounds
7 of out 20 in percent is (7/20)*100 = 35 percent.
A percent is that number over 100. Thus 20% can be written as 20/100. The next step is to note that "of" in mathematics means "multiplied by." For example, 5 groups of 3 is 5x3. This means the question can be rewritten as 20/100 x 35. This calculates to 7. Therefore, 20% of $35 is $7.