The kilometre is a unit of length in the metric system, equal to one thousand meters.
A number is a perfect square (or a square number) if its square root is an integer;
that is to say, it is the product of an integer with itself.
Here, the square root of 513 is about 22.650.
Amount of work done by A and B in 1 day = 1/30
Amount of work done by A and B in 20 days = 20 × (1/30) = 20/30 = 2/3
Remaining work – 1 – 2/3 = 1/3
A completes 1/3 work in 20 days
Amount of work A can do in 1 day = (1/3)/20 = 1/60
=> A can complete the work in 60 days
Convert to a common denominator: 3/8 + 4/2 = 3/8 + 16/8.
Add the fractions: (3 + 16) / 8 = 19/8.
The area of a rectangle is calculated by multiplying its length by its breadth:
Area = Length × Breadth
= 16 cm × 3 cm
= 48 cm²
Cost Price of 56 kg rice = Rs.
(26 × 20 + 30 × 36)
= Rs. (520+1082) = Rs.1600.
Selling Price of 56 kg rice = Rs.
(56 × 30)
= Rs. 1680.
Profit = Selling Price - Cost Price = 1680 - 1600.
Profit Percentage = Profit / Cost price × 100
= 800/1600 × 100 = 5%
A pie graph (or pie chart) is divided into sectors, where each sector represents a part of the whole.
The size of each sector corresponds to the proportion of the category it represents.
The average is the sum divided by the number of quantities:
Average = Sum / n
115 = 1840 / n
To find 'n', multiply both sides by 'n' and then divide by 115:
n = 1840 / 115
n = 16
25% of 200 is calculated by
multiplying 200 by 25/100,
which equals 50.
1 kilogram (kg) of gold = 1,000 grams (g)
1 gram (g) of gold = 1,000 milligrams (mg)
1 ounce (oz) of gold ≈ 31.1 grams (g)
A kilogram is equal to 2.2 pound.
Gold density: 19.3 g/cm³
Gold melting point: 1,064°C (1,947°F)