Длина школьного участка 20 м, ширина 15.чему равна длина соседнего участка детского садика с с такой же площадью, если его ширина в 3 раза меньше, чем у школьного участка?

20*15=300 (м) - площадь участка первого садика
15/3= 5 (м) - ширина участка второго садика.
300/5=60 (м) - длина участка второго садика
ответ: длина соседнего участка детского садика - 60 метров

Donna and Mark were in the boat.Donna was a good girl.She was going to Spain with her family.Mark was a shy handsome man.He also was going to Spain to stay there for two weeks.
One day Donna and her family were watching sea birds.Donna saw the boys who were very noisy.She saw a shy,handsome fellow.It was Mark.Mark also looked at Donna and smiled her.
Donna and Luiza went to a disco.Donna was waiting for Mark,she wanted to see him very much.
A handsome man came up to Donna and invited her to dance with him.It was Mark with his beautiful and friendly smile.Donna danced with him for a long time.A little later she saw Mark near the entrance to the disco.He was very shy and calm.
During all that time she was dancing with Mark's brother Dave.She stopped dancing and went to look for Mark.She wanted to appologize to him.She didn't know where Mark was.She couldn't find him.She wanted to return to England to see Mark.
Mark had been waiting for Donna since 6 a.m. ,but at 8 o'clock he went to look for Nick and Dave.Donna and Luoza came to the cafe at 8 o'clock.When the boat arrived,Mark and Donna tried to catch sight of one another,but they did't meet in the boat.They met at wild-night in Komilarce.Komilarce is a small town not far from Madrid.There are a lot of buildings,shops,cafes and parks in this town.And in one of these parks it was a disco-night.Many people from Komilarce,Madrid,France, England and Germany visit it.Donna was with her family.She wanted to meet Mark.
Mark didn't want to go there because he wasn't interested in dancing.But he thought about Donna.Dave,Harry and
Nick persuaded him to come.They were sitting at the table when Donna's and Mark's eyes met.Time stopped.
Donna and Mark were together!

Dear Anton,
I'm writing to you from London. This is really a great city with its old cathedrals, churches, palaces and museums . I took some pictures of London. Most of all I enjoyed going on а river trip down the Thames. We saw the Houses of Parliament along the north bank of the Thames. The clock tower of the Houses of Parliament is famous for its big hour bell known as «Big Ben».  We saw the Tower of London near Tower Bridge. 
 We also visited  Buckingham Palace where the Queen lives.  Tonight we are going to the London Eye and Trafalgar Square. By the way, we are lucky with the weather. No rain! The days are warm and sunny. I enjoy doing the sights very much. When I return home come to me to see all the pics. 
See you soon,
Sasha