Question

The ratio of prices of two cars was 3:4, three years later when the price of first had risen by 10% and that of the second by Rs.7000 the ratio becomes 11:15 Find the new prices of the cars.

Answer 1

Answer:

61050 And 77000

Step-by-step explanation:

....i solve it in my mind

Answer 2

Answer:Rs 42000 for 1st car & Rs 56000 for 2nd car

Step-by-step explanation:

Let the two cars be C1 and C2.

By question,

C1/C2=3/4

Or, 4C1=3C2......(1)

After 3 years,

(C1+10% of C1)/(C2+7000)=11/15

Or, 15{C1+0.1C1}=11(C2+7000)

Or, 15×(1.1)C1=11C2+77000

Or, 16.5C1-11C2=77000.........(2)

Or, 16.5×(3/4)C2-11C2=77000

Or, 12.375C2-11C2=77000

Or, 1.375C2=77000

Or, C2=77000/1.375=Rs56000

Now, C1=(3C2)/4=(3×56000)/4

=Rs42000