cj31150631
23.08.2019 •
Mathematics
Two families visit a zoo. the entrance charge for adults and children aged 16 or over is £x. the entrance charge for children aged under 16 is £y. the first teo adults and three children aged 17, 12 and 10. they charged a toral of £51 to enter the zoo. the second family has two adults and four children aged 14, 11, 10 and 7. they are charged a total of £54 to enter the zoo. write down two simultaneous equations to show this information
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Ответ:
(2) 2x + 4y = 54
2*(1) 6x + 4y = 102
2*(1)-(2) 4x + 0y = 48
Divide by 4: x = 12
y = 7.5
Ответ:
It would be the last one