21. Huixian's mother buys some shares of Company A on Day 0. On Day 7, the share price
of Company A is $4.60. If she sells all her shares
of Company A and buys 2000 shares of
Company B on Day 7, she would receive $7400.
On Day 12, the share price of Company A is
less than that on Day 7. If she sells all her shares
of Company A and buys 5000 shares of
$4.80 and the share price of Company B is $0.50
Company B on day 12, she would have to pay $5800.
Find
(1) the number of shares of Company A Huixian's
mother has,
(ii) the share price of Company B on Day 12.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

cant open file sorry!

step-by-step explanation:

1,8,15,22,29,36,43,50

step-by-step explanation: