Question

can anyone help me in doing this question no.7 and 8...plzz​

Answer 1

Step-by-step explanation:

[7]

Let the number be x :--

According to the question.

=> x + (x*6%) = 424

=> x + (x*6/100) = 424

=> x + (6x/100) = 424

=> 106x = 424*100

=> x = 42400/106

=> x = 400

[8]

Let the certain number be x:-

According to the question.

=> x - (15% of x) = 1360

=> x - (15/100*x) = 1360

=> x - (0.15 × x) = 1360

=> x - 0.15x = 1360

=> 0.85x = 1360

=> x = 1360/0.85

=> x= 1600

Now we will do Verification for the confirmation that answer is right :

Put the value of x in the question :--

=> 1600 - (15% of 1600) = 1360

=> 1600 - (0.15 × 1600) = 1360

=> 1600 - 240 = 1360

=> 1360 = 1360

R.H.S = L.H.S

verified ✔

Hence,

The number is 1600

hope it helps!

plz mark this answer as brainliest!