If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

Let, the sum of money be 'x'

∴S.I.= (P×R×T)/100

      =(X×4×4)/100

      =16 X/100

      =4 X/25

    ∴  Amount =(X + 4 X /25)    

                      =(25 X+4 X)÷25

                       =29 X/25

By condition,

29 X/ 25 =1044

⇒29 X =1044×25

⇒X =(1044×25)÷29

⇒X= 36×25

⇒X=900

∴The sum of money is Rs.900

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Step-by-step explanation:

45.3592

step-by-step explanation:

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.