Math, asked by rehmath831, 1 year ago

A year ago, the cost of maruti and figo are in the ratio of 3 : 4. The ratio of present and past year costs of maruti and figo are 5 : 4 and 3 : 2. If the sum of their present cost is 7.8 lacs. Find the cost of figo a year ago

Answers

Answered by sushant2586
9

Answer:

The cost of figo, a year ago = 3.2 L

Step-by-step explanation:

Let the cost of Figo a year ago Fl = x

∴ A year ago, ration of maruti and figo = 3:4

Cost of maruti last year = Ml

Ml : Fl = 3:4

∴ Ml = (3/4) Fl

∴ Ml = 0.75x .... (1)

In present year , for maruti, the ration given as 5:4

Mpresent : Ml = 5:4

∴ Present cost of maruti Mp = (5/4)Ml

substituting from eq. 1

Mp = 1.25 × 0.75 x

Mp =  0.9375 x .... (2)

For figo

Fp : Fl = 3:2

∴ Fp = 1.5 x ... (3)

As give,

Sum of maruti and figo for present  = 7.8 L

Mp + Fp = 7.8 L

substituting values from eq 2 and 3, we get

0.9375x + 1.5x = 7.8

∴ 2.4375x = 7.8

∴ x = 7.8 ÷ 2.4375

∴ x = 3.2 L

∴ The cost of figo, a year ago = 3.2 L

Answered by ektavyas21
10

Answer:3.2 lack

Step-by-step explanation:

            maruti : figo

past         3:  4  

.......................................

             present  :   past

maruti       5         :    4

figo            3         :    2

.............................................

present cost of maruti / past cost of maruti =  5/4

present cost of maruti  =  5/4***past cost of maruti

                                      =  5/4*** 3

                                      =  15/4

present cost of figo /past cost of figo  =   3/2

present cost of figo  =  3/2***past cost of figo

                                      =  3/2*** 4

                                      =  12/2  =  6

now ratio become

present cost of maruti :  present cost of figo

                 15/4              :         6

take lcm     5                 :      8

present cost of figo  = 8/13 ***7.8 lac

                                       4.8 lac

past cost of figo      by ratio method

                                 3 unit of figo is =   4.8 lac

                                  1 unit of figo     =  1.2 lac

                                   2 unit of figo   =    3.2 lac

   

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