Question

Stacy harvested 89 corn cobs from her farm. She distributed 35 corn cobs among her friends and packed the rest of the corn cobs in boxes of 10. How many boxes did she pack?

• A. 4
• B. 7
• C. 6
• D. 5

Answer 1

The correct option is D 5

Stacy harvested 89 corn cobs from her farm.
89 = 80 + 9
89 = 8 tens and 9 ones

She distributed 35 corn cobs among her friends.
35 = 30 + 5
35 = 3 tens and 5 ones

Number of corn cobs left
= 89 - 35
= (8 tens and 9 ones) - (3 tens + 5 ones)
= (8 - 3) tens + (9 - 5) ones
= 5 tens + 4 ones

So, Stacy packed 5 boxes with 10 corn cobs in each box.