sum is an answer to an addition problem, so we have to add 43 and z. z+43=72.98
Subtract 43 on both sides.
z=29.98
---
hope it helps
<span>The correct answer is: 0.53$
Calculations:
$49.99 / 95 seconds = 0.53$</span>
Answer:
group of 36 marbles is 6 times bigger than a group of 6 marbles