Fractions and Percentages

A basic point (or basis point) in financial terms equals 1/100 of 1 percent, or 0.01%. It's commonly used to measure changes in interest rates, bond yields, and other financial percentages.

Let the original fraction be n/p. After given changes, the new fraction = 3n/4p So, 3n/4p = 3/7 n/p = 4/7

It has been calculated as under: No. of half lives = 2000/1000 = 2. Amount of substance left after n half lives =N₀/2ⁿ = 1/4 = 0.25 or 25%.

% is the symbol of percent.

Let the number be x. When multiplied by 3/2, it becomes = 3x/2. Percentage increment [(3x/2 - x) /x] x 100 = (x/2x) x 100 = 50%

3% = 3/100 Now, (1/6) (3/100) = (1/2) (1/100) = 0.5/100 = 0.005

The percentage of argon in the air is 0.9%.

Let S.P. = Rs.x  Then Loss = Rs x/3, C.P =Rs.x+x/3=Rs.4x/3

Loss%= (x/3*3/4x*100)% = 25%

? = 35% of 980 + 150% of 850 - 40% of 1640 = (35/100 * 980 + 150/100 * 850) - (40/100 * 1640) = (343=1275-656) = (1618-656) = 962

63% of 25/7 = 63/100 * 25/7 = 4/9 = 2.25

1/2% = (1/2 * 1/100) = 0.5/100 = 0.005

Let the no. be x. Then , x-2/5x = 510

= 3/5x = 510

x = (510*5/3) = 850

10% of that no = 85

Let the original length be x and the original breadth be y

Original area = (xy)²

New length = (120/100x)m New breadth = (120/100y)m

New area = (120/100x * 120/100y)m²

= (36/25 m² )

Increase % area = (11/25xy * 1/xy * 100)% = 44%

Blood is composed of plasma and formed elements (cells). Plasma makes up approximately 55 percent of the total blood volume, while the remaining 45 percent consists of red blood cells, white blood cells, and platelets.