英语翻译

问题描述:

英语翻译
Hector Villanueva has a 0.300 batting average(hits/times at bat).If he gets a total of 10 more hits the next 10 times at bat,his batting average will jump to 0.400.Determine how many hits he had originally.

这是棒球计分题
Hector Villanueva 有0.3的打击率(每场击中次数/击球数).如果他击中余下的10场球,那么他的打击率上升到0.4.计算他最初击中了多少次?