Question

13. Two chocolates, three milk shakes and four cakes
cost 190. Four chocolates and eight cakes cost
1320. Find the cost of a milkshake )
(A) 10
(0) 20
iC) 30
(D) Cannot be determined​

Answer 1

Answer:

option d is the correct answer of the given question

Answer 2

Answer:

Step-by-step explanation:

Represent chocolates with X, milk shakes with Y and cakes with z

2X+3Y+4Z=190............(i)

4X+8Z=1320........ (ii)

From (i)

X=190-3Y-4Z/2...... (iii)

substituting (iii) into (ii)

4 [190-3Y-4Z/2]+8Z=1320

=2 (190-3Y-4Z)+8Z=1320

= 380-6Y-8Z+8Z=1320

-6Y=1320-380

-6Y=940

Y=-156.67

The answer is (D)