 
 <translate> The number of girls was 2 / 5 times more than the boys, which is 2 / 5 * 50 = 20 more girls. The total number of girls on the trip is 50 + 20 = 70. Together with the driver, the assistant driver, and the teacher, there were 70 + 50 + 3 = 123 people on the bus. Final answer: 123. <hau> Yawan 'yan mata sun kasance sau 2 / 5 fiye da' yan maza, wanda shine 2 / 5 * 50 = 20 karin 'yan mata. Jimlar yawan 'yan mata a kan tafiya shine 50 + 20 = 70. Tare da direban, mataimakin direban, da kuma malamin, akwai mutane 70 + 50 + 3 = 123 a cikin bas ɗin. Amsar ƙarshe: 123. 