The population of three countries A. B and Care 1.38,50,507, 8,01.76,145 and 6,24,05,680 respectively.

Find the total population of the three countries.
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W-16=-12 solve each one step equation plz

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?