You multiply both equations by a factor to get them to have the same X coefficient, the first by 5 and the second by 2, you get 10x-15y=5 and 10x+8y=28. Then you subtract the equations to get 23y=23, y=1, plug y into first equaition, x=2. Answer is (2,1)
Answer:440
Step-by-step explanation:
a is the unknown number
25% of a=110
25/100 x a=110
1/4 x a=110
a/4=110
Cross multiplying we get
a=110 x 4
a=440
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24.33 is the answer to this question
