Math
posted by Ariana .
Leah liked to balance objects she found around the house using the science kit she got for Christmas. She found that 3 identical apples and a 5gram weight exactly balanced a 50gram weight. Leah said she could tell how much each apple weighed by solving the equation 3a+5=50. Prove Leah was correct by finding the weight of 1 apple.
Answer: a = _____

3a = 505
3a = 45
a = 15
(if they really are identical, unlikely) 
3a+5=50
3a = 50  5
3a = 45
a = ? 
3a + 5 = 50
3a = 50 5
3a = 45 
3a + 5 = 50
3a = 50  5
3a = 45
a = 15
3(15) = 45 
On a game board, landing on blue means to move ahead 1 space, landing on red means to move ahead 2 spaces,a dn landing on orange means to move back 1 space. If you took 30 spins, about where would you expect to be on the game board, relative to where you started?