How many kgs of wheat costing Rs.24/- per kg must be mixed with 30 kgs of wheat costing Rs.18.40/- per kg so that 15% profit can be obtained by selling the mixture at Rs.23/- per kg?
S.P. of 1 kg mixture = Rs.23. Gain = 15%.
C.P. of 1 kg mixture = Rs.[(100/115) x 23] = Rs.20
Let the quantity of wheat costing Rs.24 is x kgs.
Using weighted average rule = $\dfrac{x\times24+30\times18.4}{x+30}$ = 20
Solving we get x = 12
|
What is the next number of the following sequence |
Answer |
|
How many numbers are divisible by 4 between 1 to 100 |
Answer |
|
There are 16 people, they divide into four groups, now from those four groups select a team of three members,such that no two members in the team should belong to same group. |
Answer |
|
7 people have to be selected from 12 men and 3 women, Such that no two women can come together. In how many ways we can select them? |
Answer |
|
Tennis players take part in a tournament. Every player plays twice with each of his opponents. How many games are to be played? |
Answer |
|
7528 : 5306 :: 4673 : ? |
Answer |
|
$x^2-y^2$=16 and xy = 15 so find out x + y |
Answer |
|
Census population of a district in 1981 was 4.54 Lakhs, while in year 2001 it was 7.44 Lakhs. What was the estimated mid-year population of that district in year 2009. |
Answer |
|
Find the maximum value of n such that 50! is perfectly divisible by $2520^n$ . |
Answer |
|
A girl leaves from her home. She first walks 30 metres in North-west direction and then 30 metres in South-west direction. Next, she walks 30 metres in South-east direction. Finally, she turns towards her house. In which direction is she moving? |
Answer |