 
<translate> 60% ụmụakwụkwọ na-akwụ ụgwọ maka nri ehihie n'ihi na 100 - 40 = 60. Ụmụ akwụkwọ 30 na-akwụ ụgwọ maka nri ehihie n'ihi na 50 x.6 = 30. Ụmụakwụkwọ ndị a na-akwụ $7 maka nri ehihie ha n'ihi na 210 / 30 = 7. Azịza ikpeazụ ya bụ: 7. <eng> 60% of the students pay for the lunch because 100 - 40 = 60. 30 students pay for lunch because 50 x .6 = 30. These students pay $7 for their lunch because 210 / 30 = 7. The final answer: 7. 