Question
Approximately how old is the Sun?Â
Solution
The Sun is estimated to be about 4.6 billion years old, formed from the gravitational collapse of a giant molecular cloud.
3,000 ___ 15 ___ 4 ___ (20)² ___ 20 = 32,200
The sum of three consecutive even numbers is 28 more than the average of these three numbers. Then the smallest of these three numbers is
A man invested a sum of money at compound interest. It amounted to Rs. 2420 in 2 years and to Rs. 2662 in 3 years. Find the sum.
906 ___Â 6 ___Â `sqrt1225` Â ___Â 500 ___Â 850 = 4,935
Rs.2420 were divided among A, B, C so that A: B=5 : 4 and B : C = 9 : 10 then C gets
The daily wages of A and B respectively are Rs.3.50 and 2.50. When A finishes a certain work, he gets a total wage of Rs. 63. When B does the same work,...
Due to 25% fall in the rate of eggs, one can buy 2 dozen eggs more than before by investing Rs.162. Then the original rate per dozen of the eggs is
Two men and 7 women can complete a work in 28 days whereas 6 men and 16 women can do the same work in 11 days. In how many days can 7 men complete the s...
`2/5` ___Â 15 ___Â 115___ 20 ___Â 4 = 581
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