1

Problem

Add \$4 50/15 + 6 45/20\$.

2

Step

Given problem

\$4 50/15 + 6 45/20\$

3

Step

Convert the the mixed fractions into improper fractions

\$110/15 + 165/20\$

4

Step

Simplify the fraction

\$22/3 + 33/4\$

5

Step

Least Common Multiple (LCM) between the denominators

L.C.M 3, 4 = 12

6

Step

Multiply the numerator and denominator of each fraction by a number so that they have the LCM as their new denominator

\$((22 × 4) + (33 × 3))/12\$

7

Step

Divide the numerator with the denominator

\$(88 + 99)/12\$ ⇒ \$187/12\$

8

Step

Whole number = Quotient (q) Numerator = Remainder (r) Denominator = Divisor

q= 15, r = 7, divisor = 12

9

Step

\$"Mixed fraction" = "Whole number" + "Numerator"/"Denominator"\$

\$15 7/12\$

10

Sumup

Please summarize steps

Choices

11

Choice-A

This option is incorrect because the numerator of the mixed fraction should be 7, not 6

Wrong \$15 6/12\$

12

Choice-B

This option is incorrect because the sum is greater than 12, so the whole part should be 15, not 12

Wrong \$12 4/12\$

13

Choice-C

This is option is incorrect because \$6/12\$ simplifies to \$1/2\$, which does not match the fraction in the result

Wrong \$12 6/12\$

14

Choice-D

This option is correct. Both the whole number and fractional part match the correct result

Correct \$15 7/12\$

15

Answer

Option

D

16

Sumup

Please summarize choices