Question

There are $7$ boxes. Each box has $10$ bags with $10$ chocolates each. How many chocolates are there in all? If Coco distributes $20$ packets of chocolates, how many chocolates are left?

• A. $700$ chocolates; $500$ chocolates left
• B. $500$ chocolates; $700$ chocolates left
• C. $500$ chocolates; $500$ chocolates left
• D. $100$ chocolates; $200$ chocolates left

Answer 1

The correct option is A $700$ chocolates; $500$ chocolates left

Say:
Number of boxes $=7$
Number of bags in each box $=10$
Number of chocolates in each bag $=10$
Steps:
We know that $1$ ten $=10$ ones
So, $1$ box $=10$ bags
$7$ boxes $=10+10+10+10+10+10+10=70$ bags
We know that, $1$ hundred $=10$ tens
So, $1$ bag $=10$ chocolates
$70$ bags $=700$ chocolates
Number of packets Coco distributes $=20$
Number of chocolates in $20$ packets:
$1$ bag $=10$ chocolates
$10$ bags $=100$ chocolates
$20$ bags $=200$ chocolates
Number of chocolates left $=700–200=500$
So, $500$ chocolates $=50$ bags $=5$ boxes of chocolates are left
Hence, option D is the answer.