৩৮৯২
A 30% solution is mixed with 10 grams of water to from a 20% solution. How many grams of the original solution did we start with?
উত্তর
20
৩৮৯৬
Thirty students have enrolled either in finance or marketing or both. If 18 enrolled in finance and 17 enrolled in marketing , how many enrolled in both?
উত্তর
5
৩৮৯৮
The local charges a monthly service charge of $ 3.50 plus 8 cents for each check. Last October, Michelle's total charges were $ 5.58 How many checks did she write?
উত্তর
26
৩৯০০
The average of six numbers is 7. If two of the six numbers are removed , the average of the remaining numbers is 8. What is the sum of the two numbers which were removed?
উত্তর
10