Question

A)Lubhanshi bought a music system for 17,000 and
sold it to Himanshi at a profit of 5%. How much
did Himanshi pay for the music system?
B)The simple interest on a sum of money for 5 years
at 7% p.a. is * 800 more than the simple interest
on the same sum for 3 years at 9% per annum.
Find the original sum of money.​

Answer 1

Answer:

Step-by-step explanation:

A)SP=105*17000/100

=105*170

=17,850

Himanshi will pay ₹17,850 for the music system.

B) Let the number be x.

A.T.Q

S¹=x*7*5/100

=35x/100

S²=x*3*9/100

=27x/100

S¹-S²=₹800

35x/100 -27x/100=₹800

8x/100=₹800

x=₹10,000

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