A car travels a certain distance at 32 km/h and comes back at 68 km/h. What is the average speed for total journey?
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A boy running at 10/9 th of his actual speed covers 39 km in 2 hours 20 minutes and 24 seconds. Find the actual speed of the boy (approx.)
P and Q can complete a task in 50 and 20 days respectively. In how many days can they complete 70% of the task if they work together?
What is the value of tan 1° tan 2° tan 3°....... tan 89°?
On dividing 111a2b2c2 by 37a2, we get ______.
What is the slope of the line, perpendicular to the line 3x - 6y = 4?
The income of S, T and U are in the ratio of 7 : 9 : 6 and their expenses in the ratio of 4 : 5 : 3. If S saves Rs 2000 out of an income of Rs 14000, then what will be the saving (in Rs) of T?
30% discount is offered on an item. By applying a promo code the customer wins 10% cash back. What is the effective discount?