Question
X can work as fast as Y and Z together. X and Y together
can finish the same task 3 times as fast as Z. If all three working together can finish the task in 18 days, how many days, will Z take to finish the task?Solution
Let the number of days it takes. X to finish the task be x Y to finish the task be y Z to finish the task be z Therefore, as per the given relations  By adding the first two equations, we get
Which food group is rich in dietary fiber?
Kindly Study the following questions carefully and choose the right answer.
The exchange of gases takes place in the leaves through these pores...
The red colour of onion is caused by the presence of which pigment?
Kindly Study the following questions carefully and choose the right answer:
Transpiration is mainly effective during _______ ?
Coffee, spinach, onion and tea in our diet mostly provide us with which of the following elements as food?
The acceleration due to gravity on the surface of the Earth is approximately:
The arrangement of leaves on stems or its branches is
What is the process of changing a substance directly from solid to gas called ?
Which disease is caused by a virus?
Kilowatt-hour is the unit of :