Question

2. You pay $18.00 for 30 text messages. At the same rate, how much would 12text messages cost?17

Answer 1

$18 for 30 messages

Ratio = price / messages = 18/30

For 12 messages:

Price / messages = x /12

Equal both ratios:

18/30 = x /12

Solve for x:

0.6 (12) = x

$7.2 = x

$7.2 for 12 messages