 <translate> In the first week, the tree shed 2 / 5 * 1000 = 400 leaves. The number of leaves remaining on the tree at the end of the first week is 1000 - 400 = 600. In the second week, the tree shed 40 / 100 * 600 = 240 leaves. The number of leaves remaining on the tree is 600 - 240 = 360. The third week the tree shed 3 / 4 of its leaves, a total of 3 / 4 * 360 = 270 leaves. The number of leaves remaining on the tree is 360 - 270 = 90 leaves. Final answer: 90. <yor> Ní ọ̀sẹ̀ àkọ́kọ́, igi náà da nǹkan bíi 2 / 5 * 1000 = 400 ewé. Iye ewé tó kù lórí igi náà ní òpin ọ̀sẹ̀ kìíní jẹ́ 1000 - 400 = 600. Ní ọ̀sẹ̀ kejì, igi náà jáwé 40 / 100 * 600 = 240. Iye ewé tó kù lórí igi náà jẹ́ 600 - 240 = 360. Ní ọ̀sẹ̀ kẹta, igi náà já 3 / 4 lára àwọn ewé rẹ̀, iye ewé tó jẹ́ 3 / 4 * 360 = 270. Iye ewé tó kù lórí igi náà jẹ́ 360 - 270 = ewé 90. Ìdáhùn tó péye: 90. 