Question

if 1 tangerine, 2 oranges and 4 grapefruits cost 2.75 and 3 tangerines 5 oranges and 8 grapefruits cost 6.25 how much does 1 tangerine and 1 orange cost

Answer 1

t+o= 0.75
Step-by-step explanation:
1t+2o+4g=2.75
3t+5o+8g=6.25
2t+3o+4g=3.5.
1t+2o=2.75-4g
4g=3.5-2t-3o
1t+2o=2.75-3.5+2t+3o
-t-o= -0.75
t+o= 0.75