Machine A produces bolts at a uniform rate of 120 every 40 seconds and Machine B produces bolts at a uniform rate of 100 every 20 seconds. If the two machines run simultaneously , how many seconds will it take for them to produce a total of 200 bolts.

Of a pole in a pound , 0.20 portions are in mud , 0.50 of it in water and the rest 6 feet is above water . Wha...

35% of Rifat's income is equal to 25% of Reaz's income . The ratio of their income is --

Shanto was asked to find the value of 7/12 of a sum of money.Instead of multiplying the same by 7/12, he divid...

'Road accidents have increased significantly .' The statement will be strengthened by the following EXCEPT :

The argument in the passage depends on which of the following assumptions ?

The argument in the passage would be most seriously weakened if it were true that