the average of 5 numbes is 40 . If 2 more numbers with an avearge of 21, are added to these numbers, What will be the average of the combined 7 numbers?

A merchant was selling an item at a price then marked it down 20% for a spring sale. During the summer, he mar...

Today jishan is twice as old as Farid and Samsu is 2 younger than Farid four years ago Jishan was 4 times as o...

There are 8 Job applicants sitting in a waiting room of which four are women and four are men. If two of the a...

A class of 50 girls and 70 boys sponsored a party. If 40% of the girls and 50% of the boys attended the party,...

If x⩽ 8 and y⩽ 3, it must be true that

A hawker takes 1.25 hours to deliver newpaper on his route. Another howker takes 15 minutes longer to deliver...