you find the LCM of 3, 4 and 7 which is 84.
84/3= 28 so x= 28
84/4= 21 so y=21
84/7= 12 so z=12
therefore, 28+21+12= 61. Your answer is D
H = cost of horseback riding per hr, p = cost of parasailing per hr
3h + 2p = 192...multiply by 2
2h + 3p = 213..multiply by -3
------------------
6h + 4p = 384 (result of multiplying by 2)
-6h - 9p = - 639 (result of multiplying by -3)
-----------------add
-5p = - 255
p = -255/-5
p = 51 <== cost of 1 hr for parasailing
3h + 2p = 192
3h + 2(51) = 192
3h + 102 = 192
3h = 192 - 102
3h = 90
h = 90/3
h = 30 <== cost of 1 hr of horseback riding
Answer:
cost of apples = 1.25 per pound
Step-by-step explanation:
from the question 10 pound box of apple costs 12.5.
ratio is a comparison of two variables and is usually done by division.
ratio of cost to number of pound will be
breaking down the denominator to 1, divide both numerator ad denominator by 10.
ratio of cost to number of pound will be
this can be written as 1.25 per pound or 1.25/pound
Hence the cost of apples per pound will be 1.25
Answer:
Step-by-step explanation:
The radius of a cone is the radius of its circular base. You can find a radius through its volume and height. Multiply the volume by 3. For example, the volume is 20.
21 because the sides are equal if they are a right angle