Rahul, Rajeev and Rohan are three friends. Rahul and Rajeev borrowed ₹4200 at 8% per annum from Rohan. Rahul borrowed for 3 years and Rajeev borrowed the same amount for 5 years. Find the difference in the respective interests paid by Rahul and Rajeev at the end of their term. What is the final amount ,paid individually, by both of them to Rohan?

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

answer: idk wbu

step-by-step explanation: umm..

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)