Katye received 15 gifts and a total of $100 in cash for her birthday. she buys one book that costs $23, and she wants to donate $10 to each of several local charities. how much money will katye have left over if she donates to as many charities as possible?
describe steps you would use to solve the problem. you do not need to find the answer.

Okay, so first, Kate buys one book that costs $23. Let's subtract 100 by 23, which is 77. Next, she wants to donate $10 to several charities. If she is feeling extra generous and donates to as many charities as possible, she will donate to seven charities with seven dollars left over. How would I figure this? Well, divide 77 (the sum left over after purchasing the book) by 10. That equals seven (there are seven tens in 70) with a remainder of 7 (she has seven dollars left over, since she cannot donate $7, she can only donate in tens). Hope this helps. 

If gravity is one third on mars then weight also one third on mars