Question

In Winterland, a one-day meal for a family costs $\$9$. The Bearisters and Cuddles’ family stay in Winterland for 8 days. How much do both families pay for 8 days altogether?

• A. $\$154$
• B. $\$25$
• C. $\$72$
• D. $\$144$

Answer 1

The correct option is D $\$144$

Let us find the total cost paid.

$\bullet$ Cost of one-day meal $=\$9$
$\bullet$ There are 2 families.
$\bullet$ Total cost of one-day meals $=2\times \text{Cost of one-day meal}$
$=2\times \$9$
$=\$18$
$\bullet$ Number of days $=8$
$\bullet$ Amount paid for 8 days $=\text{Total cost of one day meals}\times \text{Number of days}$
$=\$18\times 8$
$\bullet$ $18\times 8$ means 8 lots of 18. We know that $18=10+8$.
$\bullet$ Hence, 8 lots of 18 means 8 lots of 10 and 8 lots of 8.

Let us represent this using rods and blocks.


$\bullet$ Amount paid for 8 days $=\$144$

Hence, option C is the correct answer.