Concept used:

Rules of Addition/ Subtraction:

Two numbers with similar sign always get added and the resulting number will carry the similar sign.

Two numbers with opposite signs always get subtracted and the resulting number will carry the sign of larger number.

Rules of Multiplication/ Division:

The product/quotient of two similar sign numbers is always positive.

The product/quotient of two numbers with opposite signs is always negative.

Calculation:

In order to find the how much they will make on Thuesday by selling 53 hamburgers, use the unitary method and simplify further as shown below,

On selling 110 hamburgers, they make \(\displaystyle=\${545}\)

On selling 1 hamburger, they will make \(\displaystyle=\${\frac{{{545}}}{{{110}}}}\)

So,

On selling 53 hamburgers, they will male \(\displaystyle=\${\frac{{{545}}}{{{110}}}}\times{53}\)

\(\displaystyle=\${262.59}\)

Thus, on Tuesday they will make $262.59

Rules of Addition/ Subtraction:

Two numbers with similar sign always get added and the resulting number will carry the similar sign.

Two numbers with opposite signs always get subtracted and the resulting number will carry the sign of larger number.

Rules of Multiplication/ Division:

The product/quotient of two similar sign numbers is always positive.

The product/quotient of two numbers with opposite signs is always negative.

Calculation:

In order to find the how much they will make on Thuesday by selling 53 hamburgers, use the unitary method and simplify further as shown below,

On selling 110 hamburgers, they make \(\displaystyle=\${545}\)

On selling 1 hamburger, they will make \(\displaystyle=\${\frac{{{545}}}{{{110}}}}\)

So,

On selling 53 hamburgers, they will male \(\displaystyle=\${\frac{{{545}}}{{{110}}}}\times{53}\)

\(\displaystyle=\${262.59}\)

Thus, on Tuesday they will make $262.59