Respuesta :
There are 3 terms to remember in answering these questions. WHOLE, PART, PERCENTAGE.
Whole is the total amount.
Part is the portion of the whole
Percentage is usually the rate of the part to the whole.
If the part and percentage is given and we are looking for the whole or total.
Whole = part ÷ percentage of the part
If the whole and percentage of the part is given and we are looking for the part:
Part = whole * percentage of the part
If the part and the whole is given and we are looking for the percentage:
percentage = (part / whole) x 100%
7) 75 * 64% = 48 tiles
8) 70 * 10% = 7 plants
9) 25 * 32% = 8 pages
10) 40 * 85% = 34 emails
11) 350 * 72% = 252 friends
12) 220 * 5% = 11 files
13) 4/20 = 0.20 x 100% = 20%
17) 56 ÷ 4% = 140 days
18) 60 ÷ 20% = 300 minutes
19) 32 ÷ 80% = 40 games
20) 360 ÷ 24% = 1500 kilometers
22) 9 ÷ 3% = 300 stores
24) 24/200 = 0.12 x 100% = 12%
25) 35 ÷ 7% = 500 price of the stereo
27) 1.50 ÷ 5% = 30 cost of helmet before tax
28) there are 24 hours in a day.
sleep : 24 * 40% = 9.6 hours
school : 24 * 25% = 6 hours
eating : 24 * 10% = 2.4 hours
free time : 24 * 15% = 3.6 hours
homework : 24 * 10% = 2.4 hours
Whole is the total amount.
Part is the portion of the whole
Percentage is usually the rate of the part to the whole.
If the part and percentage is given and we are looking for the whole or total.
Whole = part ÷ percentage of the part
If the whole and percentage of the part is given and we are looking for the part:
Part = whole * percentage of the part
If the part and the whole is given and we are looking for the percentage:
percentage = (part / whole) x 100%
7) 75 * 64% = 48 tiles
8) 70 * 10% = 7 plants
9) 25 * 32% = 8 pages
10) 40 * 85% = 34 emails
11) 350 * 72% = 252 friends
12) 220 * 5% = 11 files
13) 4/20 = 0.20 x 100% = 20%
17) 56 ÷ 4% = 140 days
18) 60 ÷ 20% = 300 minutes
19) 32 ÷ 80% = 40 games
20) 360 ÷ 24% = 1500 kilometers
22) 9 ÷ 3% = 300 stores
24) 24/200 = 0.12 x 100% = 12%
25) 35 ÷ 7% = 500 price of the stereo
27) 1.50 ÷ 5% = 30 cost of helmet before tax
28) there are 24 hours in a day.
sleep : 24 * 40% = 9.6 hours
school : 24 * 25% = 6 hours
eating : 24 * 10% = 2.4 hours
free time : 24 * 15% = 3.6 hours
homework : 24 * 10% = 2.4 hours