Question

Divide 84000 into two parts such that if one part is lent
at 5% and the other at 8% the total interest
earned at the end of 4 years is
of 18,960

Answer 1

first part = ₹ 66000

second part = ₹ 18000

Step-by-step explanation:

let,

1st amount (P1) = X, then

2n amount (P2) = 84000-X

A/Q,

total interest = P1x5%x4+P2x8%x4

18960 = X×5/100×4 + (84000-X)×8/100×4

18969×100 = 20X + 32×84000 - 32X

1896000 = 2688000 - 12X

12X = 792000

X = 66000.

Now,

1st part = 66000.

2n part = 84000-66000 = 18000.