After understanding the problem, formulate equations to determine the unknown. Let x be the price of one book. Equating Alana&Petra's expense with Angus' would be
5x + 4x +5 = 19x - 10
The 5 in the left side is needed because Angus' expense is $5 more. Also, the 10 on the right side represents the $10 discount. Solving the equation,
19x = 9x = 5+10
10x = 15
x = $1.5
Therefore, the book costs $1.5.
Answer:
1/2
Step-by-step explanation:
1/3 + 1/6 = 1/2
Answer:
F. 5:27
Step-by-step explanation:
4:20+67 minutes= 5:27
Answer:
the answer is 18
Step-by-step explanation:
9root3/sin60