i thought of a number and multiplied it by 5 . and then to the answer i added 1500 and divided that answer by 4.and deducted 7 from the recent answer. Final answer i got was 688. Whats the number i started with? ( number i thought)
2006-06-09 22:16:00 · 11 answers · asked by pinkcloud2015 5 in Science & Mathematics ➔ Mathematics
256 * 5 =1280
1280 + 1500 = 2780
2780 / 4 = 695
695 - 7 = 688
starting # was 256
2006-06-09 22:19:20 · answer #1 · answered by Heavn 3 · 0⤊ 0⤋
ok, so the number you're thinking of is x, so in an equation this is what it will look like:
((5x+1500)/4)-7=688 Once you have the equation, solve it!!
+7 +7
(4) (5x+1500)/4=695 (4)
5x+1500=2780
-1500 -1500
5x=1280
/5 /5
x=256
The answer is: the number you were thinking of was 256
2006-06-10 09:21:53 · answer #2 · answered by luvsoccer53 2 · 0⤊ 0⤋
688=x*5+1500 / 4-7
688+7=x*5+1500 / 4 - 7+7
695=x*5+1500 / 4
695*4=x*5+1500 / 4*4
2780=x*5+1500
2780-1500=x*5+1500-1500
1280=x*5
1280/5=x*5/5
256=x
256*5=1280
1280 + 1500=2780
2780/4=695
695-7=688
you started with 256 check ya later â¥
2006-06-10 05:28:52 · answer #3 · answered by ♥ The One You Love To Hate♥ 7 · 0⤊ 0⤋
The value of x which satifies the equation will be the answer:
(5x+1500)/4 -7=688
5x+1500=4*695
5x=2780-1500
5x=1280
x=256
2006-06-10 05:38:06 · answer #4 · answered by iyiogrenci 6 · 0⤊ 0⤋
x->number
5x->multiplied it by 5
5x+1500->then to the answer i added 1500
(5x+1500)/4->divided that answer by 4
[(5x+1500)/4]-7->deducted 7 from the recent answer
[(5x+1500)/4]-7=688->Final answer i got was 688
Solution:
(5x+1500)/4=688+7
5x+1500=695*4
5x=2780-1500
x=1280/5
x=256
2006-06-10 05:27:10 · answer #5 · answered by Neo_Apocalypse 3 · 0⤊ 0⤋
the answer is 256
let us consider the number to b x,then according to the steps told by u,we multiply x with 5(5x),then add 1500 (5x+1500),then divide it by 4{(5x+1500)/4},then deduct 7{(5x+1500)/4 -7}
the answer is 688
therefore the equation is (5x+1500)/4-7=688
or, {5x+1500}/4=695
or,5x+1500=2780
or,5x=1280
or,x=256
this the answer
2006-06-10 05:25:07 · answer #6 · answered by suparna d 1 · 0⤊ 0⤋
256
2006-06-10 05:23:24 · answer #7 · answered by CK 3 · 0⤊ 0⤋
256
2006-06-10 05:20:47 · answer #8 · answered by fladnag_94 2 · 0⤊ 0⤋
256
2006-06-10 05:19:56 · answer #9 · answered by druid 7 · 0⤊ 0⤋
let the number be x.
according to the queston,
[(5x + 1500)/4]-7=688
or 5x = 1280
or x = 256.
2006-06-10 05:25:17 · answer #10 · answered by AshuTosh 2 · 0⤊ 0⤋