Question

Có 42 chai dầu, mỗi chai chứa 1,5l. Người ta đã bán đi 80% số dầu đó. Hỏi còn lại bao nhiêu lít dầu?

Tick 2 bn đầu tiên

Answer 1

Số lít dầu là: 42 x 1,5 = 63 (l)

Số lít dầu còn lại: 63 x (100% - 80%) = 12,6 (l)

Answer 2

Số l dầu là:

42ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccmmmmmmmmmmmmmmmmmmmmmmmmmdddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddxmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm+++++++++++++++++++++++++++++++vvvvvvvvvvvvvvdsvvx++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ccccccccccccccccccccccccccmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmdddddddddddddddddđccccccccccccccccccccccmmmmmm+++++++++++++++++++++++++++++++++++++++++vvv             d