26. I collect 30 seashells every
20 minutes, but I drop 7 shells
every 1.5 hours. If I collect shell
for 9 hours, I will end up with
shells
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you have 117 seashell in last
Step-by-step explanation:
you have collect 30 sheels in every 20 min . mean 30× 9 =270 then you drop 7 sheel in 1.5 h so 1.5 ×6 =9.0 we cut zero because of point then 7×9= 63. 270- 63= 117
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