Question

Two children, who are 224 meters apart, start walking toward each other at the same instant at rates of 1.5 m/sec and 2 m/sec, respectively (see the figure).

for the figure see the link https://www.webassign.net/swokatclassic12/2-2-017.gif

(a) When will they meet?
seconds later = ...?

(b) How far will each have walked?
child with the rate 1.5 m/sec = m
child with the rate 2 m/sec = m

sorry something is wrong to my post button.. but is that equation fr letter b..?
is it 64 and 63 or just 96/1.5 and 126/2..?
oops 126 is wrong..

Answer 1

x/1.5+(x-224)/2=1

Answer 2

x=96,126

Answer 3

96/1.5,126/2

Answer 4

is it correct

Answer 5

yes

Answer 6

a)64 sec time,b)96m,126m

Answer 7

ooppss.. 126 m is wrong

Answer 8

hey @dg2 the 126 m is wrong.. im quite confused on how did u found it.. haha

Answer 9

128 m.sorry its typo

Answer 10

ahh.. haha.. its ok.. but still im confused on how did u solve it.. haha

Answer 11

i have another question..

Answer 12

A workman's basic hourly wage is $14, but he receives one and a half times his hourly rate for any hours worked in excess of 40 per week. If his paycheck for the week is $959, how many hours of overtime did he work?

hr = ..?
icant derive a formula from this one..

Answer 13

speed=distance/time
so 224 distance

Answer 14

x distance travelled by 1.5m/sec and x-224 is covered by another

Answer 15

ahhh.. ok.. now i got it.. hwaha.. im not good at word problems.. thats why i asked how did u solve it.. haha..

Answer 16

my second question.. i cant derive a formula from that equation.. im confused at this part of the question.. but he receives one and a half times his hourly rate for any hours worked in excess of 40 per week... haha

Answer 17

wait for 5 minutes

Answer 18

haha.. ok..

Answer 19

$959/40 =23.975 excess

Answer 20

wait something went wrong

Answer 21

the question is how many hours of overtime did he work? so im gonna multiply it to 24..? or its just 23.975..? haha.. are u using some kind of a website or app for this..? or pure mental solving..? haha

Answer 22

huh..? what..?

Answer 23

see not like that.14*40=$560 per week

Answer 24

14*1.5=21 for excess

Answer 25

so 959-560=399

Answer 26

399/21=answer

Answer 27

19

Answer 28

is that it.? ahh.. multiply it to 1.5 not 1/2 haha.. thats why im wrong.. im multiplying it to 1/2 and then i also didnt know that i need to multiply 14 to 40 then minus it to 959.. ahh.. haha.. tnx..