5*pen+7*pencil+4*eraser=x;
6*pen+14*pencil+8*eraser=x+0.5x=1.5x;
7*pencil=x-5*pen-4*eraser;--> eq1
14*pencil=1.5x-6*pen-8*eraser=> 7*pencil=(1.5*x-6*pen-8*eraser)/2;-->eq2
x-5*pen-4*eraser=0.75x-3*pen-4*eraser;
0.25x=2*pen;
1*pen=0.125x;
thus 5pens=5*0.125x;
=0.625x
=62.5%
A carpenter is paid a contract fee of $2000 for 3 days work. He hires 3 workers who work for 3 days at $75 a day. Calculate and print the amount of money paid to each worker, the total paid to each worker,the total paid to all workers and the amount the carpenter is left with?
A lady was out for shopping. She spent half of her money in buying Aand gave 1 dollar to beggar. Further she spent half of her remainingmoney and gave 2 dollar to charity. Further she spent half ofremaining money and gave 3 dollars to some children. Now she is been left with 1 dollar. How much money she had in the beginning?
There are A, B teachers and C,D doctors. Find the possible no. of combinations that should not be repeated more than once?
An INK bug starts jumping 1 meter to each direction north, south, east and west respectively. It marks a point in the new locations. It comes back to its original point after jumping in all directions. It again starts the same process from the newly drawn unique points. Totally how many points did the bug mark?
Alok and Bhanu play the following min-max game. Given the expression N = 9 + X + Y - Z where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would?
The temperature at Bangalore is given by the function -t2/6+4t+12 where t is the elapsed time since midnight. What is the percentage rise (or fall) in temperature between 5.00PM and 8.00PM?
After 10 years A will be twice the age of B before 10 years.and now if the difference is 9 years between them then what is the age of B after 10 years?
6 Persons standing in queue with different age group, after two years their average age will be 43 and seventh person joined with them. Hence the current average age has become 45. Find the age of seventh person?a) 43b) 69c) 52d) 31
Find the base where 310 can be written as 1234?
A sheet of paper has statements numbered from 1 to 20. For all values of n from 1 to 20, statement n saysat most n of the statements on this sheet are false. Which statments are true and which statements are false?
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