16.
If the numerator of a fraction is increased by 20% and the denominator is decreased by 5%, the value of the new fraction becomes $$\frac{5}{2}$$. The original fraction is :

17.
A line of length 1.5 metres was measured as 1.55 metres by mistakes. What will be the value of error percent ?

18.
A reduction of 20% in the price of wheat enables Bhuvnesh to buy 5 kg more wheat for Rs. 320. The original rate (in rupees per kg) of wheat was :

19.
If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10% then the percentage change in its curved surface area is :

20.
Two numbers are respectively 20% and 50% of the third number. What percent is the first number of the second ?

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