<h2>
Answer:</h2>
The smallest possible total weight of Tom's toys is:
210 grams
<h2>
Step-by-step explanation:</h2>
It is given that:
Tom has 8 toys each toy weighs either 20 grams or 40 grams or 50 grams.
Also, he has a different number of toys (at least one) of each weight.
Now, the smallest possible weight of Tom's toy is such that:
He has one toy of 50 grams , one of 40 grams and the other's are of smallest weight i.e. 20 grams.
This means he has 6 toys of 20 grams.
One of 40 grams.
One of 50 grams.
Hence,
Total weight= 20×6+40+50
i.e.
Total weight= 120+90
i.e.
Total weight= 210 grams.
