60 kg of an alloy X is mixed with 100 kg of an alloy Y. If alloy X has lead and tin in the ratio of 3:2 and alloy Y has tin and copper in the ratio of 1:4, then the amount of tin in the new alloy is

• 53 kgs.

• 80 kgs

• 36 kgs.

• 44 kgs

A customized jewellery was sold at Rs 1000 with 90% discount on the ‘making charges’. If the payment made for making charges was Rs 100, what is the approximate rate of discount on the
product?

• 35

• 45

• 47

• 90

During the academic session 2009-10, in Banaras Hindu University, Varanasi, the number of students studying Arts, Law and Commerce was in the ratio of 5:6:7. If during the academic session 2010-11 the number of students studying Arts, Law and Commerce increased by 20%, 30% and 40% respectively, what will be new ratio?

• 26:42:63

• 36:44:73

• 26:39:49

• 30:39:49

The ratio of two numbers is 4:5. But, if each number is increased by 20, the ratio becomes 6:7. The sum of such numbers is:

• 90

• 95

• 100

• 60

The traffic lights at three different signal points change after every 45 seconds, 75 seconds and 90 seconds respectively. If all change simultaneously at 7:20:15 hours, then they will change
again simultaneously at

• 7:27:30 hours

• 7:28:00 hours

• 7:27:50 hours

• 7:27:45 hours