Question

Question #481b4

Answer 1

One piece of toast costs $0.4 and one egg costs $ 1.25.

Explanation:

Let cost of egg be `E` and that of toast be `T`

Jimmy buys 1 egg and 1 piece of toast for $1.65 can be expressed as:

`1E +1T = $1.65`--------------equation (1)

Bob buys 2 eggs and 1 piece of toast for $2.90 can be expressed as :

`2E + 1T = $2.90` -------------- equation (2)

Eliminate any one variable, say `T`,

(2)-(1) gives:

`=>`2E -1E +1T-1T = $2.90 - $1.65#

`=> 1E = $1.25`------------(3)

To get `T`, substitute this value of cost of 1 egg in any one equation, say equation (1):

`=> 1 xx $1.25 +1T = $1.65`

`=> 1T = 1.65 - 1.25 = $0.4`-------------(4)

From (3) and (4),

One piece of toast costs $0.4 and one egg costs $ 1.25.