Please help me with the questions provided below; I have studied in Math, but I want to make sure my answers are accurate to ace.
1.) Solve the proportion. 5/8= y/40.
A.) 25
B.) 13
C.) 11
D.) 10
I chose answer choice A for number one since 8x5=40, and 5x5=25. I got my answer by multiplying the numerator and the denominator by five.
2.) Solve the proportion. y/22=3/11.
Cross multiplication is also another factor I used to get my answer, since you need to use cross multiplication to solve proportions.
A.) 6
B.) 11
C.) 15
D.) 66.
I chose answer choice A.), because 3x2=6, and 11x2=22. I multiplied the numerators and denominators by two.
3.) Julie is photocopying a letter. The original letter was 8 inches wide and 11 inches long. The new copy is 12 inches wide. How long is the new copy of the letter?
A.) 22 inches.
B.) 16.5 inches.
C.) 12 inches.
D.) 121 inches.
I chose answer choice B.), because I multiplied 12x11=132, then I divided 132/8, and got an answer of 16.5 inches.
And the last question I am asking:
4.) If the original bill is $15.50, what will be the final bill after paying a 15% tip? Round to the nearest cent.
A.) $2.33
B.) $17.83
C.) $30.50
D.) $232.50.
I chose answer choice B.), ($17.83).)
3 answers
1 answer