Question

The cost of 3 dosas, 5 idlis and 7 vadas is
Rs. 154. The cost of 5 dosas, 8 idlis and 11
vadas is Rs. 246. Then the total cost of one
dosa, one idli and one vada is-
(A) 24
(B) 26
(C) 30
(D) None of these​

Answer 1

Answer:

D none of these is the answer

Answer 2

Answer:

The answer is 30

Step-by-step explanation:

Let cost of dosa,idlis, vadas be x,y,z respectively.

Equation 1 - 3x+5y+7z=₹154

Equation 2 - 5x+8y+11z=₹ 246

If we subtract equation 1 from equation 2 -

Equation 3 - 2x +3y+ 4z= ₹92

Again if we subtract equation 3 from equation 2

Equation - 4 x+ 2y+3z= ₹62

If we subtract equation 4 from equation 5-

Equation 5 - x+y+z= ₹30

Thank you