Rf company had january 1 inventory of $150,000 when it adopted dollar-value lifo. during the year, purchases were $900,000 and sales were $1,500,000. december 31 inventory at year-end prices was $215,040, and the price index was 112. what is rf company's gross profit?
a. $642,000
b. $647,040
c. $1,302,960
d. $665,190

Gross profit = $647,040

so correct option is B. $647,040

Explanation:

given data

inventory = $150,000

purchases = $900,000

sales = $1,500,000

inventory end prices = $215,040

price index = 112

to find out

RF Company's gross profit

solution

at 31st December  base year inventory prices will be  

base year inventory prices =

base year inventory prices = $192,000

and

now Changes in inventory from beginning will be here as

Changes in inventory from beginning = $192000- $150000

Changes in inventory from beginning = $42,000

so as that 31st December as LIFO

inventory at dollar value is  = $150000 × 100% + $42000 × 112%

inventory at dollar value  = $150000 + 47040

inventory at dollar value  = $197,040

so

Cost of goods sold will be here as

Cost of goods sold = beginning inventory + purchases - ending inventory    .........................1

put here value

Cost of goods sold = $150,000 + $900,000 - $197,040

Cost of goods sold =  $852,960

so Gross profit  will be here

Gross profit = sales - cost of goods sold .........................2

put here value

Gross profit = $1500000 - $852960

Gross profit = $647,040

so correct option is B. $647,040

sound is invisible, but sometimes we can feel it. when a kettle-drum is thumped with a stick that time the tight drum skin moving up and down very quickly for some time and then it pumped sound waves into the air. loudspeakers also work in a similar manner.

components of a speaker:

electromagnet

in order to translate an electrical signal into an audible sound, an electromagnet is used in looudspeakers

  suspension

suspension is used to   center the voice coil in the gap of the magnet and it exerts a restoring force to keep it there. suspension is used to limits the maximum mechanical excursion of the diaphragm and voice coil.

voice coil

voice coil is a coil of wire which is attached to the apex of a loudspeaker cone. it provides the motive force to the cone by the reaction of a magnetic field to the current passing through it.

cone

in a   loudspeaker, a   thin, semi-rigid membrane attached to the voice coil, which moves in a magnetic gap due to which it vibrates   and produced sound. it is known as diaphragm and it can also be called a cone, though not all speaker diaphragms are cone-shaped.

surround

surround is also known as front suspension. surround is used to join the cone to the chassis. together with the suspension it controls the cone excursion, and it is also used to   determine how energy which is   travelling through the cone is absorbed, and how the speaker limits when it reaches the ends of its travel.

dustcap

dustcap is used to protect the voice coil from dust and dirt. it is a part of the cone.

how speaker work

the outer part of the cone is fastened to the outer part of the loudspeaker's circular metal rim. the inner part is fixed to   voice coil that sits just in front of a permanent magnet . when loudspeaker is hooked up to a stereo, electrical signals feed through the speaker cables into the coil. it will convert the coil into an electromagnet magnet . when electricity flows back and forth in the cables, the electromagnet either repels or attract the permanent magnet. this moves the coil back and forth, and it pull and push the loudspeaker cone. like a drum skin vibrating back and forth, the moving cone pumps sounds out into the air.in this way loudspeakers works.

answer; synthetic production system;