A problem!!

I want to make a break in the story "the locked room". Here I offer you a problem:

"Luis is thinking in three consecutive numbers. These numbers make a total of 27. What numbers are they?"

Consecutive numbers: números consecutivos (esto es, números que van uno tras de otro, como 1, 2, 3  ó 5, 6 ó 7)

Make a total of: Suman un total de

A water problem.

Six persons are drinking water. They drink 21 glasses. Each person has drunk a different number of glasses. Do you know how many glasses has each person drunk?

Vocabulary:

has drunk: ha bebido

each: cada

S

The two bottles.

There are two bottles on one side of a fountain. One of them fills 5 litres, and other 3 ltres. The aim is to get four exact litres.

Rules: you can only use the two bottles and water. You can transfer water from one to another bottle.

Vocabulary:

bottle: botella.

aim: objetivo.

get: conseguir

The raven and the jug.

There is a thirsty raven flying above the desert. Suddenly he sees a jug with water. He tries to drink, but he can't because the water level is at the bottom of the jug. Looking around, he can find many pebbles. Do you know what can he do for drinking the water?

Vocabulary:

thirsty: sediento
suddenly: de repente
jug: jarra de boca estrecha
tries: intenta
around: alrededor
pebbles: chinatos
Know: sabes

An interesting problem.

We have got a weighing scale and nine weights. All the weights the same, excepting one. Can you know what is de different weight in two weightings?

Translation: Tenemos una balanza y nueve pesas. Todas ellas pesan lo mismo, exceptuando una ¿Podrías saber cuál es la pesa diferente con solo dos pesajes?

The letuce, the wolf and the sheep.

A shepherd wants to cross a river. He travels with a sheep, a wolf and a letuce. He has got a boat; but in this boat he can carry only one element from one to another bank. How can he cross the river? You should consider that:

• The wolf eats the sheep if the shepherd lets them alone.
• The sheep eats the letuce if the shepherd lets them alone.

Good luck!! We will solve the problem tomorrow.

Vocabulary:

Shepherd: pastor

wants: quiere

cross: cruzar

travels: viaja

boat: bote

carry: llevar

only: solo

bank: orilla

How: cómo

should: deberías

lets them alone: los deja solos

A very difficult problem.

Este va en español. Si alguien se atreve a intentar averiguarlo... ¡Buena suerte!

Mi madre y yo nos hemos pesado juntos en la báscula de la farmacia, y nos ha salido que pesamos 87 kg.

Luego nos hemos pesado mi padre y yo, y el resultado ha sido de 105 kg.

Finalmente se han pesado mis padres. Juntos pesan 118 kg.

¿Puedes averiguar con estos datos cuánto pesa cada uno de nosotros?

Another problem.

A long time ago there were two Scottish sheepherders enthusiastic about Mathematics. Their names: McMurray and Wallace. One day McMurray said:

- Hey, Wallace! Why don't you give me two of your sheeps? In this way I will have the same number of animals than you.

Wallace answer:

- ¿And why don't you give me one sheep? In this way I will have three times your sheeps.

¿How many sheeps had McMurray got? ¿How many sheeps had Wallace got?

Hace mucho tiempo había en Escocia dos pastores muy aficionados a las matemáticas. Sus nombres eran McMurray y Wallace. Un día dijo McMurray a Wallace:

- ¡Hey, Wallace! ¿Por qué no me das dos ovejas? Así tendré el mismo número de animales que tú.

A lo cuál respondió Wallace:

- ¿Y por qué no me das tú una oveja? Así yo tendré el triple de ovejas que tú.

¿Cuántas ovejas tenía McMurray? ¿Cuántas ovejas tenía Wallace?

Good luck / Buena suerte.

A new challenge for today.

This is a beautiful problem. Try to solve it:

There are 29 children at class. There are boys and girls. There are three more girls than boys. How many boys and girls are there at class?

Translation: Hay 29 niños en clase. Hay niños y niñas. Hay tres niñas más que niños ¿Cuántos niños y niñas hay en la clase?

Maths Challenge (Reto Matemático)

Luis takes chess lessons every five days, and Mario every four. Today (Thursday), they have took lessons together. When will they meet again?

Luis toma lecciones de ajedrez cada cinco días, y Mario cada cuatro. Hoy (jueves) han tomado las lecciones juntos ¿Cuándo se volverán a encontrar?