Two numbers are in the ratio 3:4. The product of their HCF and LCM is 2028. Then sum of the number will be
72
86
68
91
Which of the following is the best method to teach geometry?
Play method
Drill method
Formula-based method
Display method
An article is sold at 20% profit. If its cost price is increased by 50 and at the same time if its selling price is also increased by 30, the percentage of profit decreased by %,then the cost price is
851
852
850
853
If each edge of a cube is doubled, then the percentage increase in its total surface area is
200%
300%
150%
600%