What is:

(i) [tex]$\frac{1}{5} \%$[/tex] of ₹ 400 ?

(ii) [tex]$25 \%$[/tex] of 2 km ?

(iii) [tex]$2 \frac{1}{2} \%$[/tex] of 30 m ?

(iv) [tex]$15 \%$[/tex] of 500 l ?

(v) [tex]$80 \%$[/tex] of 130 kg ?

(vi) [tex]$20 \%$[/tex] of 2 minutes ?



Answer :

Certainly! Let's break down each part of the problem step by step:

### (i) [tex]\(\frac{1}{5} \%\)[/tex] of [tex]\(₹ 400\)[/tex]

First, let's convert [tex]\(\frac{1}{5} \%\)[/tex] to a decimal:
[tex]\[ \frac{1}{5} \% = \frac{1}{5} \times \frac{1}{100} = \frac{1}{500} = 0.002 \][/tex]

Now, multiply [tex]\(0.002\)[/tex] by [tex]\(₹ 400\)[/tex]:
[tex]\[ 0.002 \times 400 = 0.8 \][/tex]

So, [tex]\(\frac{1}{5} \%\)[/tex] of [tex]\(₹ 400\)[/tex] is [tex]\(₹ 0.8\)[/tex].

### (ii) [tex]\(25 \%\)[/tex] of 2 km

Convert [tex]\(25 \%\)[/tex] to a decimal:
[tex]\[ 25 \% = \frac{25}{100} = 0.25 \][/tex]

Now, multiply [tex]\(0.25\)[/tex] by 2 km:
[tex]\[ 0.25 \times 2 = 0.5 \][/tex]

So, [tex]\(25 \%\)[/tex] of 2 km is 0.5 km.

### (iii) [tex]\(2 \frac{1}{2} \%\)[/tex] of 30 m

First, convert [tex]\(2 \frac{1}{2} \%\)[/tex] to a decimal. This is equivalent to [tex]\(2.5 \%\)[/tex]:
[tex]\[ 2.5 \% = \frac{2.5}{100} = 0.025 \][/tex]

Now, multiply [tex]\(0.025\)[/tex] by 30 m:
[tex]\[ 0.025 \times 30 = 0.75 \][/tex]

So, [tex]\(2.5 \%\)[/tex] of 30 m is 0.75 m.

### (iv) [tex]\(15 \%\)[/tex] of 500 l

Convert [tex]\(15 \%\)[/tex] to a decimal:
[tex]\[ 15 \% = \frac{15}{100} = 0.15 \][/tex]

Now, multiply [tex]\(0.15\)[/tex] by 500 l:
[tex]\[ 0.15 \times 500 = 75.0 \][/tex]

So, [tex]\(15 \%\)[/tex] of 500 l is 75.0 l.

### (v) [tex]\(80 \%\)[/tex] of 130 kg

Convert [tex]\(80 \%\)[/tex] to a decimal:
[tex]\[ 80 \% = \frac{80}{100} = 0.80 \][/tex]

Now, multiply [tex]\(0.80\)[/tex] by 130 kg:
[tex]\[ 0.80 \times 130 = 104.0 \][/tex]

So, [tex]\(80 \%\)[/tex] of 130 kg is 104.0 kg.

### (vi) [tex]\(20 \%\)[/tex] of 2 minutes

Convert [tex]\(20 \%\)[/tex] to a decimal:
[tex]\[ 20 \% = \frac{20}{100} = 0.20 \][/tex]

Now, multiply [tex]\(0.20\)[/tex] by 2 minutes:
[tex]\[ 0.20 \times 2 = 0.4 \][/tex]

So, [tex]\(20 \%\)[/tex] of 2 minutes is 0.4 minutes.