150
6. (10 x 15) ÷ (10 + 15) = 150 ÷ 25 = 6
The square root of 100 = 10 The square root of 225 = 15 The sum = 10 + 15 = 25
15
The sum of 15 and 3 = 18. The process of 'summing' is adding up.
10 + 15 = 25. the tens digit of 25 is 2
10 and 5 10+5=15 10-5=5
1/15 because: 10+5=15 or 15/1 15/1 flipped is 1/15
When the product of 15 and 40 is divided by the sum of 15 and 45, what is the quotient?
Since the average is the sum divided by 10 (in this case 10, because there are 10 data items), it follows that the sum is 10 times as much.
10 + 5 = 15 10 x 5 = 50
10