Question

if the cost of a cat and rat is equal to 10 and a dog and rat is equal to 20 and a dog and car is equal to 24 what is the cost of cat +dog+rat​

Answer 1

Answer: 25

Step-by-step explanation:

- Cat and rat each one is 5

- Dog and rat = 5+dog=20, dog=15

- Cat+dog+rat= 5+5+15=25

Answer 2

Answer:

Hey Mate!!

Let cat bec, dog be d and rat be r.

c + r = 10 .....(1)

d + r = 20 .....(2)

d + c = 24 .....(3)

••> d = 24 - c

By d in 2,

24 - c + r = 20

=> c - r = 24 - 20

=> c - r = 4 .....(4)

By (4) + (1),

c - r + c + r = 4 + 10

=> 2c = 14

=> c = 7

By c in (1),

7 + r = 10

=> r = 10 - 7

=> r = 3

By r in (2),

d + 3 = 20

=> d = 20 - 3

=> c = 17

••> c + d + r = 17 + 3 + 7 = 27