2007-12-17 02:57:33 · 5 answers · asked by kuc2215 2 in Science & Mathematics ➔ Mathematics
10%<------>150
40%<------>600____a
5%<-------->75_____b
1%<-------->15
3%<--------->45____c
0.3%<----->4.5____d
48.3%<---> a + b + c + d = 724.5
2007-12-17 03:05:59 · answer #1 · answered by Como 7 · 4⤊ 1⤋
An estimate is called for, not the exact number. Very often we use estimates such as finding 15% or so of a restaurant bill to figure the tip.
In this question, since 48.3% is just shy of 50%, start there. 50% or half, of 1500 is 750. So the estimate should be a little lower than 750.
We could get a little more exact by figuring that 1% of 1500 is 15 and 48.3 is about 1 2/3% short of 50%. This would give us an estimate of 725 since 1 2/3 times 15 is 25 and 750 minus 25 equals 725.
Hope this didn't get too complicated.
2007-12-17 03:07:48 · answer #2 · answered by Howard Z 1 · 0⤊ 1⤋
1)
48.3%â48%
1500 x 48%
= 1500 x 48/100
= 720 or
2)
48.3%â50%
1500 x 50%
= 1500 x 50/100
= 750
2007-12-17 03:09:17 · answer #3 · answered by An ESL Learner 7 · 0⤊ 1⤋
Just use numbers you can calculate in your head.
50% = 750
1% = 15 -- Note we can easily divide this by 3.
(1/3)% = 5
48.333333333% = 50% - 1% - 2*((1/3)%) = 750 - 15 - 10 = 725
2007-12-17 03:09:58 · answer #4 · answered by 1,1,2,3,3,4, 5,5,6,6,6, 8,8,8,10 6 · 0⤊ 1⤋
about 720, since 50% would be 750
2007-12-17 03:00:48 · answer #5 · answered by teamlessbear 4 · 1⤊ 0⤋