David used a 1/3 of his salary to pay rent, 2/7 to pay school fees and saved the rest. If he saved sh.3,200 how much was his salary?
(Answer that i am looking for 8,400)
Please show working out. :)
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1/3x + 2/7x + 3200 equals to X
7/21x + 6/21x + 3200 equals to X
13/21x + 3200 equals to X
8/21 X equals to 3200
X equals to 21 multiplied by 3200/ 8
X equals to 8400
7/21x + 6/21x + 3200 equals to X
13/21x + 3200 equals to X
8/21 X equals to 3200
X equals to 21 multiplied by 3200/ 8
X equals to 8400
Focusonmehboye:
Thank you!
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