In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
The ___(1)__ of energy in India are met from both commercial and non commercial sources. The most __(2)___ sources of energy today are coal and natural gas, hydro electricity and nuclear power. On the other hand, firewood, cow-dung cakes and vegetable waste etc. ___(3)__ non commercial forms of energy. While non commercial forms of energy __(4)___ demand, coal is the __(5)___ source of commercial energy in India.
For the following questions answer them individually
A is 1.5 times efficient than B therefore takes 8 days less than B to complete a work. If A and B work on alternate days and A works on first day, then in how many days the work will be completed?
One of the diagonal of a rhombus is 70% of the other diagonal. What is the ratio of area of rhombus to the square whose side is same as the length of the larger diagonal?
A shopkeeper sells a table at a discount of 20% and earns a profit of 60%. If he sells the same table at 40% discount, then what will be his new profit percent?
If A/3 = B/2 = C/5, then what is the value of ratio $$(C + A)^{2} : (A + B)^{2} : (B + C)^{2}$$?
