Quantitative Aptitude - Arithmetic Ability Questions

The traffic lights at four different road crossings change after every 15 sec, 18 sec, 27 sec and 30 sec respectively. If they all change simultaneously at 6:10:00 hours, then at what time will they again change simultaneously?

Rashika can do a work in 5 days. Rashmi can do the same work in 7 days. Both of them finish the work together and they get Rs 240 for the work. What isthe share (in Rs) of Rashika?

The ratio of present ages of Rangitha and Shaheen is 6:5. After 12 years the ratio of their ages will be 7:6. What is Rangitha's present age?

The average revenues of 7 consecutive years of a company is Rs 71 lakhs. If the average of first 4 years is Rs 66 lakhs and that of last 4 years is Rs 78 lakhs. What is the revenue for the fourth year.

cos(A+B) + cos(A-B) is equal to

Select the odd number from the given alternatives.

If (cosecA -­ 1)/(cosecA + 1) = x, then the value of x is

If x + 2(3-5x) > -1 - 2x < 5 - x/3; then the value of x is