Chapter 8, Problem 25MCQ

To determine

To calculate: cost of 8 beads.

Answer to Problem 25MCQ

The cost of $8$ beads is $\$3.2$

Explanation of Solution

Given information: The cost of craft beads varies directly with the number purchased. The cost of $25$ beads is $\$10$

Calculation:

Given the cost of $25$ beads is $\$10$

Cost of $25$ beads $=10$

Cost of $1$ bead $=\frac{10}{25}$

Therefore,

Cost of $8$ bead $=\frac{10}{25}\times 8$

On solving the above,

  $\begin{array}{l}Cost=\frac{2}{5}\times 8\\ Cost=\frac{16}{5}\\ Cost=3.2\end{array}$

Conclusion:

Hence, cost of $8$ beads is $\$3.2$