7/5=s/g multiply both sides by g
7g/5=s multiply both sides by 5/7
g=5s/7
We are then told that:
g+30=s-30 subtract 30 from both sides
g=s-60, and from earlier g=5s/7, and g=g so we can say:
s-60=5s/7 multiply both sides by 7
7s-420=5s subtract 5s from both sides
2s-420=0 add 420 to both sides
2s=420 divide both sides by 2
s=210, and since g=s-60
g=150
So Simon had 210 pencils and Greg had 150 pencils.
Check..
s:g=210:150=7:5
and
s-30=g+30
210-30=150+30
180=180
Answer:
<u>The correct way of calculating the bill without tax is B. Divide the total bill by 1.17</u>
Step-by-step explanation:
Let's assume that the cellular phone bill with tax for this month is $ 117 (100 + 17 of tax), now let's make the calculation using the four alternatives provided:
A . Divide the total bill by 0.83
117/0.83 = 140.96, therefore it's not the correct way.
<u>B. Divide the total bill by 1.17</u>
<u>117/1.17 = 100, therefore this is the correct way.</u>
C. Multiply the total bill by 0.83
117 * 0.83 = 97.11, therefore this is not the correct way.
D. Multiply the total bill by 1.17
117 * 1.17 = 136.89, therefore this is not the correct way.
Answer:168
Step-by-step explanation: v=lwh
V=7x8x3
= 168
Does this answer your question?
Answer:
9m is the length of both common sides
9m-2m=7m is the length of the uncommon side
9m×2+7m=26m
