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Chapter 2: Q. 628 (page 222)

In the following exercises, solve each equation 0.1d鈥�+鈥�0.25d鈥�+鈥�8鈥�=鈥�4.1

Short Answer

Expert verified

The solution of equation is d=6.

Step by step solution

01

Step 1. Given Information.

The equation is 0.1d鈥�+鈥�0.25d鈥�+鈥�8鈥�=鈥�4.1.

02

Step 2. Solving given equation.

Solving 0.1d鈥�+鈥�0.25d鈥�+鈥�8鈥�=鈥�4.1

Multiply both side by 100 , we get:-

0.1d路鈥�100+0.25d+8路鈥�100=4.1路鈥�10010d+25d+8=410

Expand:-

10d+25d+200=41035d+200=410

03

Step 3.  Simplify

Subtract both sides by 200 .

35d+200-200=410-20035d=210

Divide both side by 35 , we get:-

35d35=21035d=6

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