In the economy of Mungo there is a person called Ike. Ike has a red income of 40 and a blue income of 10. Blue prices are 1 bcu (blue currency unit) per unit of ambrosia and 1 bcu per unit of bubblegum. Red prices are 2 rcus (red currency units) per unit of ambrosia and 6 rcus per unit of bubblegum. You have to pay twice for what you buy, once in red currency, once in blue currency. If Ike spends all of his blue income, but not all of his red income, then it must be that:

(a) he consumes at least 5 units of bubblegum.

(b) he consumes at least 5 units of ambrosia.

(c) he consumes exactly twice as much bubblegum as ambrosia.

(d) he consumes at least 14 units of bubblegum.

(e) he consumes equal amounts of ambrosia and bubblegum

(b) he consumes at least 5 units of ambrosia.

Explanation:

Ike has a red income of 40 and a blue income of 10

Step 1

1 blue income = 1bcu

1 red income = 1 rcu

1 unit of ambrosia = 1 bcu

1 unit of ambrosia = 2 rcu

1 unit of bubblegum = 1 bcu

1 unit of bubblegum = 6 rcu

Step 2

You have to pay twice for what you buy, once in red currency, once in blue currency.

1 unit of ambrosia = 1 bcu * 2 = 2bcu

1 unit of bubblegum = 1 bcu * 2 = 2bcu

1 unit of ambrosia = 2 rcu * 2 = 4 rcu

1 unit of bubblegum = 6 rcu * 2 = 12 rcu

Step 3

For blue currency

When Ike buys 1 unit of ambrosia (2bcu) and 1 unit of bubblegum (2bcu) he is left with 10bcu -(2bcu+2bcu) = 6bcu

For red currency

When Ike buys 1 unit of ambrosia (4rcu) and 1 unit of bubblegum (12 rcu) he is left with 40 rcu -(4 rcu + 12rcu) = 24 rcu

Step 4

For blue currency

When Ike buys 1 unit of ambrosia (2bcu) and 1 unit of bubblegum (2bcu) he is left with 6bcu -(2bcu+2bcu) = 2bcu

For red currency

When Ike buys 1 unit of ambrosia (4rcu) and 1 unit of bubblegum (12 rcu) he is left with 24 rcu -(4 rcu + 12rcu) = 8 rcu

Step 5

For blue currency

When Ike buys 1 unit of ambrosia (2bcu) he is left with 2bcu - 2bcu = 0bcu. (All blue income spent)

For red currency

When Ike buys 1 unit of ambrosia (4rcu) he is left with  8rcu -4 rcu = 4 rcu

Ike purchased a total of 6 units of ambrosia and spent all of his blue income with 4 red income left.

The answer is therefore B  which means he consumes at least 5 units of ambrosia.

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; the above statement/question is ( true);