Question

E D. Convent the following 1. (68) 10 = (__)2
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Answer 1

Answer:

How to Convert Decimal to Binary?

Step 1: Divide the given decimal number by 2 and note down the remainder.

Step 2: Now, divide the obtained quotient by 2, and note the remainder again.

Step 3: Repeat the above steps until you get 0 as the quotient.

Answer 2

Answer:

A percent Is a fraction with denominator 100. i.e 1/100

Per cent is derived from Latin word ‘per centum’ meaning ‘per hundred’.

It is denoted by % symbol

1% means 1/100= .01

 

Some Conversion rule of percentage:

Rule 1. To convert a percentage into fraction:

Write the number as the numerator and 100 as the denominator and then reduced fraction to its simplest form.

 

Rule 2. Convert a fraction or ratio into a percentage:

Multiply the fraction by 100 & add the % symbol.

 

Rule3 : To convert a percentage into decimal:

Remove the% sign and shift the decimal point in the number by two places to the left.

 

Rule 4:

Convert a decimal into percentage:

Shift decimal point in the number by two places to the right and add% sign.

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Solution:

a)

percentage of 3:4= (3/4) x 100        ( on multiplying by 100)

% of 3:4 = 3 x 25 = 75 %

% of 3:4 = 75 %

b)  

percentage of 2:3= (2/3) x 100        ( on multiplying by 100)

% of 2:3 = 200/3 = 66 2/3%

% of 2:3 = 66 2/3 %

Explanation: