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Jenny has 12 marbles.
1
of these 12 marbles are large.
4
The rest of these 12 marbles are small.
Each large marble has a weight of 70 grams.
Each small marble has a weight of 50 grams.
Work out the total weight of the 12 marbles.

Sagot :

Abu99idn

Answer:

680g

Step-by-step explanation:

Assuming the second line reads, "4 of these 12 marbles are large":

1 large marble is 70g so 4 large marbles would be:

4  × 70 = 280

This leaves 8 other marbles, which would be small;

These are 50g each so, their collective weight would be:

8 × 50 = 400

The total weight of all the marbles is found by:

400 + 280 = 680

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