EV CHARGING AND FUSE

[ebee]

1 Brick = 7 pounds + 1/2 Brick.
x 2 therefore
2 bricks = 14 pounds plus 1 brick
remove one brick each side gives you 1 brick = 14 pounds.
1.5 bricks = 21 pounds.

 

[morqthana]

Me too. Very strange.

I make it 21 now.

I've made it 21 since a few seconds after I wrote down x=7+x/2.

Can't imagine how 15¾ can be arrived at...

 

[ebee]

Can't imagine how 15¾ can be arrived at...

Me neither but I know quite a few got 10.5 for some reason.

Once you suggest putting 1 brick on balancing scales and half a brick plus 7 pounds on the opposite pan of the weighing scales they tend to work it out eventually.

 

[morqthana]

Or just envisaging 1 brick and 2 half-bricks, and call one of the half bricks "7lb"...

 

[EFLImpudence]

Can't imagine how 15¾ can be arrived at...

By doing it wrongly. Simples.

 

[SUNRAY]

I've made it 21 since a few seconds after I wrote down x=7+x/2.

Can't imagine how 15¾ can be arrived at...

My instant reaction was the 21lb but eventually I wondered what the catch is and came up with the others.

Being deliberately obtuse with reading the question I was also able to come up with 5&5/8lb.


Edit and of course is it was read or heard as: If a brick weighs 7 pounds with half a brick, then a brick and a half weighs 7 pounds as that is the question

 

[morqthana]

Some might even use the term for great slabs of stone used to build the Great Pyramid which I think were mostly about 2 to 19 tons.

Most (about 2 million, I think) were "only" 2½ tons, but others were heavier. Total mass, they reckon, was about 6 million tons. I say was, as all the limestone cladding got "recycled" in later years. It was also nearly 150m high, and it was almost 4,500 years before we built a taller stone building.

It took 30 years to build. HS2 will take longer than that, unless they (and I so hope they do) pull the plug on it.

 

[robinbanks]

there's

There're

Just while we're being accurate and all

 

[robinbanks]

1 Brick = 7 pounds + 1/2 Brick.
x 2 therefore
2 bricks = 14 pounds plus 1 brick
remove one brick each side gives you 1 brick = 14 pounds.
1.5 bricks = 21 pounds.

I thought it was easier to to say that "7 pounds plus half a brick" means that half a brick weighs 7 pounds. (slap a brick on the table, chisel it in half, point to one half and say "7 pounds" and point to the other half and say "half a brick")

I know quite a few got 10.5 for some reason.

This one's easier to reason; ultimately you concluded a brick weighs 7 pounds so 1.5*7 is 10.5

 

[SUNRAY]

I'll just mention

Me neither but I know quite a few got 10.5 for some reason.

This one's easier to reason; ultimately you concluded a brick weighs 7 pounds so 1.5*7 is 10.5

1 brick = 14 pounds.