Area of 4 walls of a cuboid is 57m2, if its length is 5.5 m and height is 3 m. What is the breadth (in m)?
4.5 m
4 m
3 m
3.5 m
B.
4 m
Area of four walls of a cuboid = 57 m2
⟹ 2(l +b) x h = 57
⟹ 2(5.5 + b) x 3 = 57
⟹ 11 + 2b = 19
⟹ 2b = 8
⟹ b = 4 m
At 30% discount the selling price of an article is ₹ 1,050/-. What is the selling price (in ₹) if the discount is 15%?
₹ 1,200/-
₹ 1,175/-
₹ 1,100/-
₹ 1,275/-
The simple and compound interest that can be earned in two years at the same rate is ₹ 4,000/- and ₹ 4,180/- respectively. What is the rate(% per annum) of interest?
18% per annum
4.5% per annum
9% per annum
12% per annum
A watch having marked price as ₹ 8,400/- is sold for ₹ 5,040/- after two successive discounts. If the first discount is 25%, then what is the second discount percentage?
0.15%
20%
0.25%
0.3%