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 does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the whole work?

If the radius of a circle is decreased to 25% of its original value, calculate the percentage decrease in the area of the circle

(1155) +(18 − 6) × 9 =?

What would be the smaller of the two angles formed by the hour hand and the minute hand at 3:47 p.m?

In what ratio must a mixture of 20% milk strength be mixed with that of 60% milk strength so as to get a new mixture of 25% milk strength ?

A store sells a watch for a profit of 25% of the cost. Then the percentage of profit against selling price is

What is the value of [1 – tan (90 – θ) + sec (90 – θ)]/[tan (90 – θ) + sec (90 – θ) + 1]?