Question

Sahil got an interest of Rs. 3,080 for two years at 8%p.a. Find the principal. (b) Mohit buys a mobile for Rs. 12,000 and he sells it for Rs. 8,400. What is his loss percent ?

Answer 1

Answer:

(a). given,

si=3080

r=8%

t=2

SI=PRT/100

3080=(P×8×2)/100

308000=16P

308000/16=P

19250=p

hence principal is 19250

b). CP=12000

SP=8400

loss=cp-sp

=12000-8400

=3600

loss%=(loss/cp)×100

=(3600/12000)×100

=3600/120

=30%

hence loss% is 30

.......666......