Quantitative Aptitude - Arithmetic Ability Questions

If 70% of total articles are sold at a profit of 20% and remaining articles are sold at a loss of 20%, then what will be the overall profit percentage?

A number is decreased by 10% and the resulting number is again decreased by 20%. What is the final percentage of decrease?

If A has got 20% more marks than B, then by what percent marks of B are less than the marks of A?

Δ DEF is right angled at E. If m∠D = 30°, what is the length of DE (in cm), if EF = 6√3 cm?

Divide 150 into two parts such that the sum of their reciprocals is 3/112. Calculate both the parts.

A solid cone of height 24 cm and radius of its base 8 cm is melted to form a solid cylinder of radius 6 cm and height 6 cm. In the whole process what
percent of material is wasted?

Karan remembers that his sister's birthday is not after 18th August. Karan's mother remembers that Karan's sister birthday is before 20th August but after 17th August. On which date of August is Karan's sister birthday?

The amount of simple interest accrued on an amount of Rs 28,500 in seven years is Rs 23,940 What is the rate of interest p.c.p.a ?