A sum of money at simple interest amounts to rs. 575 in 3 years and to rs. 600 in 4 years. The sum is:
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Answer: sum= 500
Step-by-step explanation:
Let sum=x
1st case
Sum (p)= x
Interest = 575-x
Time = 3 years
Rate= r%
Interest= p*r*t/100
575-x = x*3*r/100
so, r= 57500 - 100x / 3x ..( 1 )
2nd case
Sum= x
Interest = 600-x
Time = 4 years
Rate = r% (NOT GIVEN , yet will
take same)
600-x = x*4*r/100
so, r = 60000-100x / 4x ..( 2 )
From (1) & (2)
57500-100x / 3x = 60000-100x / 4x
after solving
25x = 12500
therefore x=500/- ANS
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