A car moving in the morning fog passes a man walking at 4km/h. in the same direction. The man can see the car for 3 minutes and visibility is upto a distance of 130m. The speed of the car is :
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Vikram and Vivek can finish a work in 50 days. They worked together for 20 days and then left. How much work has been done by them?
In the given figure,PQ = PS = SR and QPS = 40 deg, then what is the value of QPR (in deg) ?
Of the 5 numbers whose average is 78, the first is 2/11 times the sum of other 4. The first number is
A fraction is greater than its reciprocal by 9/20. What is the fraction?
If secA + tanA = x, then the value of x is
10% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?
If 2x + 6y = 3xy and 10x - 3y = 4xy, find x, y.