answer for s or the total
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Hey There!
Cross multiply on both sides, with this you will be cross multiplying in order to set the numbers up.
s * 2.4 = 2.4s
2.8 * 6 = 16.8
2.4s = 16.8
Divide s from both sides:
16.8/2.4
The answer is 7 or s= 7