A man bought apples at the rate of 8 for Rs 34 and sold them at the rate of 12 for Rs 57. How many apples should be sold to earn a net profit of Rs 45?
What change in percent is made in the area of a rectangle, if length is decreased and breadth is increased by 5% ?
A2.5 % increase
B0.25 % increase
C0.25 % decrease
D2.5 % decrease
State ‘T’ for true and ‘F’ for false.
(i) 12 hours : 30 hours = 8 km : 20 km
(ii) The ratio of 1 hour to one day is 1 : 1.
(iii) The two terms of a ratio can be in two different units.
in first part we cannot compare unless the units are same.