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中一數學有唔識!

發問:

Natalie originally had $(18x-400) pocket money.After buying 4分之7x sweets,$6 were left.Given that the price of each sweet is $2. A.Express,in term of x,the amount of money Natalie had spent on sweets. B.Find the value of x. C. How much money did Natalie originally have?

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A. Express,in term of x,the amount of money Natalie had spent on sweets. Given that the price of each sweet is $2. so, the amount of money spent on sweets = $2 * (7x)/4 = $(7x)/2 B. Find the value of x. (18x - 400) - (7x)/2 = 6 18x - (7x)/2 = 406 (36x)/2 - (7x)/2 = 406 (29x)/2 = 406 29x = 812 x = 28 C. How much money did Natalie originally have? It is found that x=28, so the amount of money Natalie originally have = $(18*28-400) = $(504 - 400) = $104

其他解答:

4分之7x ????????????? Natalie originally had $(18x-400) pocket money.After buying 7/4 x sweets,$6 were left.Given that the price of each sweet is $2.|||||A. The amount of money Natalie had spent on sweets = ($2)(7x/4) = $7x/2 B. (18x - 400) - 7x/2 = 6 14.5x = 406 x = 28 C. Natalie originally have 18*28 - 400 = $1040D7DAC4E6DF60DFA