Answer:
3. 16.67
4. 25.5
5. 180
6. 43. 2
Step-by-step explanation:
3.) Step1:We ake the assuption that 72 is 00% sinc tis put vlu
Step 2: We next represent the value we seek with
X.
Step 3: From step 1, it follows that 100% = 72
Step 4: In the same vein, x% = 12
Step 5: This gives us a pair of simple equations:
100%=72(1)
x%=12
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have:
x% = 12
100% 72
x=16.67
4.) 30% × 85 =
(30 ÷ 100) × 85 =
(30 × 85) ÷ 100 =
2,550 ÷ 100 =
25.5
