Question

Nina sold a car to Malini at a profit of 20%. Malini sold it to Geeta at a profit of 10%. If Geeta had to pay 330000 find the cost price of Nina

Answer 1

Step-by-step explanation:

NINA ____p=20%____ MALINI__P=10%__GEETA cp of Geeta is rs 330000

cp of geta=sp of malini =330000

p=10%=1/10

if 10 is the cp then sp will be 11

but sp is not 11 but 30000 more than 11

similarly cp is not 10 but 30000 times more than 10 which is CP=300000

CP OF MALINI=SP OF NINA=RS300000

P=20%=1/5

IF CP IS 5

SP will be 6

but sp is not 6 but 50000 times more than 6

similarly the cp is not 5 but 50000 more which is

CP OF NINA IS 250000

Answer 2

Step-by-step explanation:

let,

the c.p. for Malini = x

A/Q

X + 10%of x = 330000

x + x/10 = 330000

11x/10= 330000

11x= 3300000

x= 300000

the c.p for Nina is 300000

Now profit made by Nina =20% of 300000

= 1/5 * 300000

= 60000

c.p for Nina= 300000 - 60000

= 240000