Dallas was given a discount of 10 percent of the following items:

1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent?
*I need anyone to help me please*
And in case someone know where i can get such the questions,i am kindly need for practice
*Thanks for the response especially for the questions to practice

10% discount means he paid 90%.

Total cost of the goods is

1.25 * 42000 + 10*22000 = 272500

He paid 90% of that, which is

0.90 * 272500 = ?