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In a string of 20 beads, the average weight of the first 14 beads is 25 grams and that of the last 6 beads is 8 grams. What is the average weight of all the beads?
5Q:
In a string of 20 beads, the average weight of the first 14 beads is 25 grams and that of the last 6 beads is 8 grams. What is the average weight of all the beads?
- 116.4 gramsfalse
- 221.3 gramsfalse
- 319.9 gramstrue
- 429.7 gramsfalse
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Answer : 3. "19.9 grams"
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