经典24 题.doc

The classical 24 numerical reasoning 一．The bar chart below shows the number of temporary and permanent staff working in five regional call centres: 1. the actual number of calls taken per hour in region sw fell 10% short of the target set – what was the target number of calls per hour? E. (28x200+25x100)/(100%-10%)=9000 2. an increase of 6% in both the number of temporary and permanent staff in region NW is planned. If the average number of calls taken per hour stayed the same for all staff, what would be the increase in the total number of calls taken per hour？ C. 20x250+16x300) x6%=588 3.if the ratio of permanent to temporary staff in region SE was the same as for region E, but the total number of staff remained the same, what would be the change in calls handled per hour? B. Region E (permanent: temporary)=3:2 Region SE Total: 400 ，Permanent: 150 Temporary: 250 (New) Permanent: 400x3/5=240 ， Temporary: 400x2/5=160 所以我们可以得出P增加了90人，T减少了90人 90x(30-18)=1080 (我们可以用其他方法算，但是却不是最节约时间的算法) 4.which two regions had the highest total number of calls handed per hour by permanent staff? E。目测，（SE和SW的P每小时接的电话数是最高的，而且SW的P的人数多，所以总数上SW可定比SE要高。虽然E的每小时接电话数不高，但是他人数最多，所以总数也很高） 二．The table below shows coach travel limited’s ticket prices and sales targets to three destinations over a 4-week period: 5. if the combined sales target to all three destinations over the current period in creased by 5%,what is the total amount of revenue that remains to be earned by the end of this four-week period in order to meet the target ? C. (43200+80000+16000) x105%-11232-12096-21600-19200-4160-4640=73232 6. for the next four-week period ,the intention is to sell 120 tickets to skipdown per week at the same average pared to the current four-week period,by what percentage would the revenue target for skipdown increase? A. (40x120x4-1600)/16000=20% 7. how many fewer tickets to hopworth would need to be sold if the average ticket price was increased to 50 GBP and the sales tar