Let x be the number of children
Let y be the number of adults
Equation 1: x + y = 9
Equation 2: y = 9 - x
210x + 315y = 2205
210x + 315 (9-x) = 2205
210x + 2835 - 315x = 2205
2835 - 2205 = 315x - 210x
630 = 105x
630/105 = 105x/105
6 = x
There are 6 numbers of children.
To get the y, use the Equation 2: y = 9 - 6 ---> y = 3
Therefore there are 3 adults on the trip.
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Hey only know #6 so i hope this helps
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Answer:
b. 6 pairs of jeans per crate of olives; and
c. 4 pairs of jeans per crate of olives
Explanation:
Olives Jeans Trade off Ratio (Olives:Jeans)
Spain 1 3 1:3 or 0.33:1 (1/3 = 0.33)
Denmark 1 11 1:11 or 0.09:1 (1/11= 0.09)
Spain & Denmark have less opportunity cost & hence comparative advantage than each other, in Olive & Jeans respectively.
Spain will export Olives to Denmark (importer). Denmark will export Jeans to Spain (Importer). Trade will be gainful if they get exchange ratio better than domestic exchange ratio.
- '2 jeans pairs per olive crate' not gainful trade ratio for Spain, as it is getting more i.e 3 jeans pair per olive crate at its own domestic ratio.
- '13 jeans per olive' not gainful for Denmark, as 0.07 = (1/13) olive per jeans is worse than its own domestic ratio i.e 0.09 = (1/11) olive per jeans
'4 jeans pairs per olive crate' is gaining trade ratio for:
- Spain: As it gets 4 i.e more than 3 pairs of jeans per olive crate
- Denmark : As it gets 0.25 = (1/4) i.e more than 0.09 olive crates per pair of jeans
'6 jeans pairs per olive crate' is gaining trade ratio for:
- Spain: As it gets 6 i.e more than 3 pairs of jeans per olive crate
- Denmark : As it gets 0.16 = (1/6) i.e more than 0.09 olive crates per pair of jeans
Both of them are gainful trade ratios, but:
- 1olive:4 jeans is more gainful for Denmark, as it is gaining relatively more than domestic exchange rate (0.25 is more > 0.09 than 4 > 3).
- 1olive:6jeans is more gainful for Spain as it is gaining relatively more than domestic exchange rate (6 is more > 3 than 0.16 > 0.09)
