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.
36 kgs.
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
26:39:49
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
47
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
100
Two consecutive even positive integers, sum of the squares of which is 1060 are:
12 and 14
22 and 24
20 and 22
20 and 22
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
7:27:50 hours
