Question

You and a friend go to tacos galore for lunch. You order three soft tacos and three burritos and your bill totals $11.95 your friend bill is $10.00 for four soft tacos and two burritos. How much does each soft tacos in each burritos cost.

Answer 1

Explanation:

using elimination method,let the tacos be X and burritos be Y.

my order is 3soft tacos and 3burrito

3X + 3Y = $11.95---------- i

my friends order is 4soft tacos and 2burritos

4X + 2Y = $10.00---------ii

multiplying i by 2 and ii by 3 gives us

6X + 6Y = $23.9------iii

12X + 6Y = $30.00----iv

Subtracting iii from iv gives

6X = $6.1,

dividing through by X gives

$1.02

substituting it for X in i gives

(3*$1.02) + 3Y = $11.95

$3.05 + 3Y = $11.95

therefore Y gives us;

(11.95 - 3.05)/3

which equals

Y = $2.97