Question

express the first quantity as a percentage of the second :
a) 45 minutes, 2 hours
b)21/4 kg , 25 g
c)90 paise, Rupees 15

please explain step by step... it's urgent please.. ​

Answer 1

Answer:

a) 45 minutes, 2 hours = 37.5%

b) $2\frac{1}{4}$ kg, 25 g = 9000%

c) 90 paise, Rupees 15 = 6%

Step-by-step explanation:

a) 45 minutes, 2 hours

= 45 minutes, 120 minutes

$=\frac{45}{120} . 100$%

$=\frac{15}{2} . 5$%

= 37.5%

b) $2\frac{1}{4}$ kg, 25 g

=2.25 kg, 25 g

= 2250 g, 25 g  

$= \frac{2250}{25} . 100$%  

= 9000%

c) 90 paise, Rupees 15

= 90 paise, 1500 paise

$= \frac{90}{1500} . 100$%

= 6%