Question

The cóst of three Apple and one Berry is #22 while the cost of four apples and three berries is#41. Find the cost of seven apples.

Answer 1

Answer:

35 Rs

Step-by-step explanation:

Let cost of apple be taken as x

and cost of berry be y

Therefore,

According to question

3x + 1y = 22 ------ (1)

4x + 3y = 41 --------(2)

multiplying eq (1) with 3, we get

9x + 3y = 66 -------(3)

Solving eq (2) & (3)

(3)-(2) gives,

5x= 25

x=5

Put x=5 in eq (1)

3(5) + y = 22

15+y=22

y= 7

Therefore, cost of one apple is Rs.5

Thus, cost of seven apples be: 7*5=35 Rs