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If 4 is added...

Question

If 4 is added to a number and the sum is multiplied by 3 the result is 30 find the number

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Solution

$D e a r s t u d e n t, L e t t h e n u m b e r b e' x' A s 6 i s a d d e d t o t h e n u m b e r (i . e . t h e n e w n u m b e r b e c o m e s x + 6) a n d t h i s s u m i s m u l t i p l i e d b y 3 (i . e . 3 * (x + 6)) w h i c h i s e q u a l t o 90 . T h e r e f o r e, t h e e q u a t i o n b e c o m e s 3 \times (x + 6) = 90 (x + 6) = \frac{90}{3} (x + 6) = 30 x = 30 - 6 x = 24 T h e r e f o r e, t h e g i v e n n u m b e r i s 24 R e g a r d s$

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4

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