A man buys a table and chair for Rs. 500/-. He sells the table at a loss of 10% and chair at a gain of 10%. He still gains Rs. 10/- on the whole. The cost price of chair (in Rs) is:
Rs. 200
Rs. 250
Rs. 300
Rs. 350
C.
Rs. 300
Total cost = Rs. 500
Total gain = Rs. 10 which equals = 2% on Rs. 500
Thus, Common percentage = 2%
Loss on table = 10%
Gain on chair = 10%
By percentage rule:
Ratio of cost of table and chair is given by:
Table : Chair
(10 - 2)% : (2-(-10)% = 8 : 12 = 2 : 3
∴ Cost price of chair:
The least number that must be added to 8961 to make it exactly divisible by 84 is
27
57
141
107
The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases by 3 months. Find the age of the teacher.
30
25
35
40
In Δ ABC and Δ DEF, if ∠A = 50°, ∠B = 70°, ∠C = 60°, ∠D = 60°, ∠E = 70° and ∠F = 50° then
Δ ABC ~ Δ FED
Δ ABC ~ Δ DFE
Δ ABC ~ Δ EDF
Δ ABC ~ Δ DEF
Two persons are on either side of a temple, 75 m high, observe the angle of elevation of the top of the temple to be 30° and 60° respectively. The distance between the persons is
173.2 m
100 m
157.7 m
273.2 m