Answer:
16.4
Step-by-step explanation:
To decrease a number by 45% of its value, you subtract the 45%. To get 45%, you multiply the number by 0.45.
So, if x is the original number, then the equation for this word problem would be x - 0.45x = 9.
To solve, we first subtract 0.45x from x, which is 0.55x. This means that 0.55x is equal to 9. To simplify, we can divide both sides by 0.55. 9/0.55 is 16.36363636..., etc. The nearest tenth would be 0.4, so your answer is 16.4
Answer:
i would help but i dont know!
Step-by-step explanation:
<h3>
Answer: 54 gallons</h3>
Work Shown:
(distance)/(gallons used) = (distance)/(gallons used)
(333 miles)/(37 gallons) = (486 miles)/(x gallons)
333/37 = 486/x
333x = 37*486 .... cross multiplication
333x = 17,982
x = (17,982)/333
x = 54 gallons
You need 54 gallons to travel 486 miles.
For 10% coupon, 10% of the original price is decreased, therefore we can multiply the price by (1-10%)=90% to find the total cost:
24×90%
= 24×0.9
= $21.9
Therefore the answer is $21.9.
Hope it helps!
