Question

to visit the two conversatories at garden by the bay, 11 adults and 5 children have to pay dollar 280 whereas 14 adults and 9 children have to pay dollar 388. Find the total amount of family of 2 adults and 3 children has to pay to visit the two conversatories.

Answer 1

Answer:

76

Step-by-step explanation:

11A +5C = 280

14A +9C =388

99A +45C = 2520

70A + 45C = 1940

29A = 580

A = 20

11*20 +5C = 280

5C = 60

C = 12

2A +3C

= 2*20 + 3*12

= 76