1.The guests had gone, and now there remained the clearing up to be done. "What about you washing all the glasses, Ted," Greg suggested. "What a job!" replied the boy. "How many are there?" "About a hundred, and I'll pay you fivepence for every glass you wash," Greg told him. "But you pay me for any you break. Tenpence the first, twenty pence the second, forty pence the third, and so on. Doubling up." This was agreed, and Ted ended up £1.75 to the good. How many glasses did he break?

Ted broke 3 glasses (washed 96 successfully)

Ted broke 5 glasses (washed 92 successfully)

Ted broke 6 glasses (washed 97 successfully)