Find the ratio of the following: |
(a) 30 minutes to \[1.5\]hours |
(b) 40 cm to \[1.5\,m\] |
(c) 55 paise to Rs. 1 |
(d) 500 ml to 2 litres |
Answer:
(a) 30 minutes to 1.5 hours = 30 min.: 90 min. {\[\because\]1 hour = 60 minutes, 1.5 hours \[=1.5\times 60=90\text{ }min.\]} \[=30:90\] \[=1:3\] (b) 40 cm to 1.5m \[=40\text{ }cm.:1.5\times 100\text{ }cm.\] {\[\because\]\[1\text{ }m=100\text{ }cm.,1.5\text{ }m=1.5\times 100\text{ }cm\]} \[=40\text{ }cm.:150\text{ }cm.\] \[=40:150=\frac{40}{150}=\frac{4}{15}\] \[=4:15\] (c) 55 paise to Rs. 1 = 55 paise : 100 paise {Rs. 1 = 100 paises} \[=55:100=\frac{55}{100}=\frac{11}{20}\] \[=11:20\] (d) 500 ml to 2 litre = 500 ml.: 2000 ml. {\[\because\]1 litre =1000 ml., \[=500:2000=\frac{500}{2000}=\frac{1}{4}\] \[\therefore\] {2 litre = 2000 ml.} \[=1:4\]
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