Percentages, Fractions and Decimals Flashcards
Lucy got 87% in her french test, what is this in decimal?
0.87
65% of Lucy’s class passed the French test. What fraction is this?
13/20
Write 142% as mixed number
1 21/50
What is 33 1/3 % in decimal
0.3
1 in percentage
100%
10 in percentage
1000%
0.1 in percentage
10%
How do you convert 0.86 into percentage?
Multiply by 100%, 0.86 * 100% = 86%
8 out of 11 in percentage
73%
10% of 50
Divide by 10, 50/10 = 5
5% 0f 8
Divide by 10 and then halve it, 8/10=0.8, 08/2 = 0.4
25% of 160cm
Divide by 4, 25% = 25 / 100 = 1 / 4
160 / 4 = 40 cm
11% of 5600
11% = 10% + 1%
10% of 5600 = 560
1% of 5600 = 56
11% of 5600 = 560 + 56 = 616
iPhone costs 300 dollars. If a store keeper wants to make 20% profit how much he should sell?
Original cost = 300
20% profit = 0.2 * 300 = 60
Selling price = 360
How do you calculate an increase of X%?
To find increase of X% find 100+X %
Selling for profit means increasing the price
How do you calculate an decrease of X%?
To find decrease of X% we can find 100 - X %
Selling for loss means decreasing the price
Venkat bought a laptop for 50000 and sold it for 10% loss, How much money he got from the sale?
Approach-1:
Cost = 50000
Loss = 0.1 * 50000 = 5000
Selling price = 50000 - 5000 = 45000
Approach-2:
Selling price = 50000 * (100 - 10) % = 50000 * 0.9 = 45000