The cost of the phone was 400 manat. The price of the phone was increased by 25% and then
reduced by 50%. How much manat cheaper phone was sold compared to the original price?
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11.Out of 24 students in the class, 1/4 of the students attend English courses. Half of the remaining
students attend Russian courses. How many students attend Russian language courses?
(2 marks)
12.The angles of a triangle are 1:2:3. Find the length of the big side if the sum of the big and small
sides is 7.5 cm.
students attend Russian courses. How many students attend Russian language courses?
(2 marks)
12.The angles of a triangle are 1:2:3. Find the length of the big side if the sum of the big and small
sides is 7.5 cm.
13.10 quarts of 40% salt solution was added to 40 quarts of 10% salt solution. What is the
percentage of salt in final solution?
percentage of salt in final solution?
I am not good in DIM
Ответы
Ответ дал:
1
Ответ:
400 - 100%
х - 125% (100+25)
х = 400×125 : 100 = 500
500 - 100%
х - 50% (100-50)
х = 500*50 : 100= 250
In comparison with the original price, the telephone wad sold by 150 manat cheaper. (400-250=150)
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