10g of caustic soda dissolved in 100mL of water makes a solution of caustic soda. Amount of caustic soda needed for 1 litre of water to make the same type of solution is ______.

Ratio of 5 paise to 25 paise is the same as the ratio of 20 paise to_____

Saturn and Jupiter take 9 hours 56 minutes and 10 hours 40minutes, respectively for one spin on their axes. The ratio of the time taken by Saturn and Jupiter in lowest form is ______.

The marked price of a table is Rs 625 and its sale price is Rs 500.

What is the ratio of the sale price to the marked price?

Which pair of ratios are equal? And why?

(i)(ii)