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標題:
計算一條數學問題
發問:
我唔識點計下面條數,唔該教下我la,please: A cash voucher,either $200 or $300 ,is given to each of 45 staff members.If the total amount of these vouchers given is $11800 ,find the number of staff members who receive a $200 voucher. Help me , please >.
最佳解答:
let x be the number of staff members who receive a $200, then (45-x) is the number of staff members who receive a $300... so the equation is: 200x + 300(45-x) = 11800 2007-01-15 15:46:04 補充： the step is: 200x 300(45-x)=11800:200x 13500-300x=11800-100x=-1700 x=17
其他解答:
Let number of $200 voucher be x, number of $300 voucher be y (1) x + y = 45 (2) 200x + 300y = 11800 2x + 3y = 118 from (1) above : x = 45- y therefore, 2(45-y) + 3y = 118 90 - 2y + 3y = 118 y = 118 - 90 = 28 x = 45 - y = 17 Answer : Number of staff members who receive a $200 voucher is 17|||||希望幫到你。 Let y to be the no.of staff members who recievea$200 voucher. Let x to...............300$ voucher y+x=45 x=45-y (45-y)(300)+200y=11800 (13500-300y)+200y=11800 13500-100y=11800 13500-11800=100y 100y=1700 y=17 ※,there are 17 staff recieve a $200 voucher 我cheak過,一定對。 2007-01-15 16:01:59 補充： 我上面個人對x和y調轉了！！|||||Let number of $200 voucher be x, number of $300 voucher be y (1) x + y = 45 (2) 200x + 300y = 11800 2x + 3y = 118 from (1) above : x = 45- y therefore, 2(45-y) + 3y = 118 90 - 2y + 3y = 118 y = 118 - 90 = 28 x = 45 - y = 17 Answer : Number of staff members who receive a $200 voucher is 17.
計算一條數學問題
發問:
我唔識點計下面條數,唔該教下我la,please: A cash voucher,either $200 or $300 ,is given to each of 45 staff members.If the total amount of these vouchers given is $11800 ,find the number of staff members who receive a $200 voucher. Help me , please >.
最佳解答:
let x be the number of staff members who receive a $200, then (45-x) is the number of staff members who receive a $300... so the equation is: 200x + 300(45-x) = 11800 2007-01-15 15:46:04 補充： the step is: 200x 300(45-x)=11800:200x 13500-300x=11800-100x=-1700 x=17
其他解答:
Let number of $200 voucher be x, number of $300 voucher be y (1) x + y = 45 (2) 200x + 300y = 11800 2x + 3y = 118 from (1) above : x = 45- y therefore, 2(45-y) + 3y = 118 90 - 2y + 3y = 118 y = 118 - 90 = 28 x = 45 - y = 17 Answer : Number of staff members who receive a $200 voucher is 17|||||希望幫到你。 Let y to be the no.of staff members who recievea$200 voucher. Let x to...............300$ voucher y+x=45 x=45-y (45-y)(300)+200y=11800 (13500-300y)+200y=11800 13500-100y=11800 13500-11800=100y 100y=1700 y=17 ※,there are 17 staff recieve a $200 voucher 我cheak過,一定對。 2007-01-15 16:01:59 補充： 我上面個人對x和y調轉了！！|||||Let number of $200 voucher be x, number of $300 voucher be y (1) x + y = 45 (2) 200x + 300y = 11800 2x + 3y = 118 from (1) above : x = 45- y therefore, 2(45-y) + 3y = 118 90 - 2y + 3y = 118 y = 118 - 90 = 28 x = 45 - y = 17 Answer : Number of staff members who receive a $200 voucher is 17.
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