At a carnival, the number of adults to the number of girls to the number of boys is 4:7:9. There are 26 more boys than girls. How many adults are there at the carnival?
Penjelasan dengan langkah-langkah:
adults : girls: boys
4 : 7 : 9
26 + girls = boys
boys-girls= 26
girls = 7/2 × 26 = 91
adults = 4/7 × 91 = 52