 
 <translate> The estimated time of arrival from Washington to Idaho is 640 / 80 = 8 hours. So, the estimated time of arrival from Idaho to Nevada is 550 / 50 = 11 hours. Therefore, It took him 11 + 8 = 19 hours to arrive at the destination. So, the answer is 19. <hau> An kiyasta lokacin isowa daga Washington zuwa Idaho shine 640 / 80 = 8 hours. Saboda haka, kimanin lokacin isowa daga Idaho zuwa Nevada shine 550 / 50 = 11 hours. Saboda haka, ya dauki shi 11 + 8 = 19 hours don isa wurin da aka nufa. Amsar ita ce 19. 