1] The sum of two numbers is 25 and their difference is 13.Find their product
a]111  b]112  c]113  d]114

let the numbers be x and y
x + y = 25
x - y = 13
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2x  = 38
x = 19

x - y = 13
19 - y = 13
y = 6

product of two numbers x * y = 19 * 6 = 114

2] the difference between two numbers is 114 and their sum is 20.what is their product?
a]51  b]52  c]53  d]54

3] If the sum of two numbers is 97 and their difference is 37.Their product is
a]2011  b]1120  c]1013  d]2010

1] The simple interest on a certain sum of money at 5% per annum for 3 years is Rs.300.Find the sum.
a]2000  b]1000  c]1500  d]2500

SI = PTR/100
300 = (P*3*5)/100
P = 2000

2] The simple interest on a certain sum of money at 4% per annum for 3 years is Rs.48.Find the sum.
a]400 b]100  c]500  d]200
3] The simple interest on a certain sum of money at 4% per annum for 5 years is Rs.800.Find the sum.
a]4000  b]1000  c]1500  d]2500
4] The simple interest on a certain sum of money at 3(3/4)% per annum for 2(1/3) years is Rs.210.Find the sum.
a]2400  b]1000  c]1500  d]2500

1]Subtracting 40% of a number from the number,we get the result as 30.The number is
a]50  b]100  c]150  d]200

let the number be x
x - 40% of x = 30
[60/100] x    = 30
                  x = 50