Answer:
4a : $31.25 x, 4b : 15 calculators
Question 5 ( 1 ) : ( 4 )( J ), Question 5 ( 2 ) : { Kiran ⇒ 28 chips, Mai ⇒ 112 chips, Tyler ⇒ 56 chips }
Step-by-step explanation:
4a. If a school paid $31.25 per calculator, n number of calculators would signify a total cost of $31.25 n. Similarly if the school bought x number of calculators they paid a total of $31.25 x.
4b. We know that the school paid $31.25 per calculator, and that they spent $500. To determine the count of calculators we can create an equation that represents the relationship between the total cost, and the number of calculators.
$500 = $31.25 x, where x = number of calculators,
x = ( About ) 15 calculators
The exact value was 15.87...but as the number of calculators is a whole number ( you can't have part of a calculator ) our solution had to be rounded down to the nearest whole value. After all, we can't have 16 calculators if there are only " 15.87 " present.
Question 5.
1 ) Kiran won 2 / 3rds as many chips as Jada, so we can say K = J. Similarly Mai won 4 times as many chips as Kiran ( M = 4K ) and Tyler won half as many chips as Mai ( T = M ). Tyler won half as many chips as Mai, but Mai already won 4 times as many chips as Kiran, who in turn won 2 / 3rd as many chips as Jada. Therefore we can substitute each of the expression into one another,
K = J ⇒ M = 4K ⇒ T = M,
M = 4( J ) ⇒ T = M,
T = ( 4 )( J ) - this is our expression.
2 ) If Jada won 42 chips, we can calculate the number of chips everyone has, knowing that they each are related by a common expression,
Kiran = J = ( 42 ) = 28 chips,
Mai = 4( J ) = 4( 28 ) = 112 chips,
Tyler = M = ( 112 ) = 56 chips
{ Kiran ⇒ 28 chips, Mai ⇒ 112 chips, Tyler ⇒ 56 chips }