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Let the cost of the apples be x
Let the cost of the pears be y
6y+3x=3.90 (eqution 1)
2y+5x=3.30 (equation 2)
Rerrage equaiton 2.
y=1.65-2.5x (set 1)
6y+3x=3.90 ---> subsitute for y
Plug x in and solve for y
Hence the cost of one pear is $0.40 and the cost of one apple is $0.475.
2Let the students tickets be x
Let the adults tickets be y
Sub for y
Hence, about 950 students tickets were sold, and about 550 adults tickets were sold.
3.Let x be the speed of the plane
Hence the speed of the plane is 225mph.
4.Let the cost of the hotdogs be x
Let the cost of the soft drinks be y
5x+5y=22.25 --> solve for y
Subsitute for y
Hence, the cost of a hotdog is $1.15 and a cost of a soft drink is $3.3.
5. Dime value x 100 = 10 (x)
Quarter value x 100 = 25 (y)
10x+25y=345 (sub in y)
Hence, there were 2 dimes and 13 quarters.