Thirtieth 5806
The surface of the pond is covered with water lilies so that the area covered by water lilies doubles per day. On the thirtieth day, the surface was full of water lilies. On how many days was half of the pond covered with water lilies?
Correct answer:

Tips for related online calculators
Do you want to convert time units like minutes to seconds?
You need to know the following knowledge to solve this word math problem:
basic operations and conceptsUnits of physical quantitiesGrade of the word problem
Related math problems and questions:
- One-eighth 6206
Water lilies grow on the pond, and their number doubles every day. We will cover the whole level in 12 days. In how many days will one-eighth of the surface be covered?
- Water lilies
Water lilies are growing on the pond, and their number doubles every day. If the whole layer is covered in 12 days, how many days will it take to cover eight layers?
- Water lily
The father placed 4 containers with water lilies in the built pond. The containers had the shape of a cylinder with a diameter of 55 cm and a height of 27 cm. How many liters are all the water lily containers?
- Lilies 81910
There are twice as many pink water lilies in the pond as yellow water lilies, but twice as few as white water lilies. Which water lilies are the most and which are the fewest? How many times more white water lilies are there than yellow water lilies? How
- Miraculous tree
The miraculous tree grows so fast that the first day increases its height by half the total height of the second day by the third, the third day by a quarter, etc. How many times will it increase its height after 6 days?
- Remaining 81308
Dana read the book in 4 days. On the first day, she read a third of the book; on the second day, a sixth of the book; on the third day, half of the remaining pages. She still had 30 pages left on the last day. How many pages was the whole book, and how ma
- A student 6
A student read 2/7 of a novel on the first day. On the second day, he read 42 pages of the book. He read half of the book at the end of the third day. The whole book was read in these three days. What fraction can he read of the book on the second day? Ho