২৫৮৯১
Sam can mow a lawn in 20 min, while takes 10 min longer to mow the same lawn. How long will they take to mow the lawn if they work together?
উত্তর
12 min
২৫৮৯২
What must be added to the expression (4a² + 9b²) so that the same is a perfect square?
উত্তর
12ab
২৫৮৯৩
The roots of the equation 9x2 -bx+81 =0 will be equal , if the value of b is
উত্তর
±54
২৫৮৯৪
The present age of A and B are in the ratio 6: 4 Five years ago their ages were in the ratio 5: 3. Find their present ages.
উত্তর
3,020
২৫৮৯৭
If an inspector rejects 0.8% of a product as defective, how many units of the produce? will he examined in order to rejected 2?
উত্তর
2500
২৫৮৯৮
The selling price of 15 items equals the cost price of 20 items. What is the percentage of profit earned by the seller?
উত্তর
33.33%
২৫৮৯৯
A two digit number has 3 in its unit digit. The sum its digits is one seventh of the number itsself. What is the number?
উত্তর
63
২৫৯০০
A predator is chasing its prey. The predator takes 4 leaps for every 6 leaps of the prey and the predator covers as much distance in 2 leaps as 3 leaps of the prey. Will the predator succeed in getting its food.?
উত্তর
Can't be determined