Вшколе учатся 300 мальчиков,а число девочек 15% больше.сколько девочек учатся в школе?

he did not/didn't help me yesterday.

she did not/didn't clean her room.

they did not/didn't watch tv.

ann and bob did not/didn't play chess.

my sister did not/didn't cry yesterday.

they did not/didn't close the shop.

bob did not/didn't open the box.

the girls did not/didn't skip yesterday.

her sister did not/didn't cook dinner.

we did not/didn't like the film.

mr brown did not/didn't live in africa.

the boys did not/didn't thank their aunt.

they did not/didn't finish their work.

he did not/didn't stop near the house.

ann did not/didn't listen to music.

1 день - ? Км

2 день - 1 д. × 2 км

3 день - 1 д. + 6 км

Всего - 38 км

1) 38 - 6 × 2 = 26 (км) - 2 дня.

2) 38 - 26 = 12 (км) - 1 день.

3) 12 × 2 = 24 (км) - 2 день.

4) 12 + 6 = 18 (км) - 3 день.

ответ: 12 км - 1 день.

Короче я не знаю, ничего не понимаю, ночь и я туплю. Соррян.