# McGraw Hill Math Grade 5 Chapter 6 Lesson 11 Answer Key Problem Solving

All the solutions provided in McGraw Hill Math Grade 5 Answer Key PDF Chapter 6 Lesson 11 Problem Solving are as per the latest syllabus guidelines.

## McGraw-Hill Math Grade 5 Answer Key Chapter 6 Lesson 11 Problem Solving

First draw a diagram and then solve.

Question 1.
Ken and Pete built a bridge made of toothpicks. Ken worked 3$$\frac{1}{3}$$ hours on the bridge, and Pete worked $$\frac{1}{2}$$ hour more than Ken. How much total time did Pete spend working on the bridge?
Ken: 3$$\frac{1}{3}$$ hours
Pete: Ken’s hours + $$\frac{1}{2}$$ hours
Total Time = _____________________
The total number of hours spent working on the bridge is 3$$\frac{5}{6}$$ hours.

Explanation:
Given that Ken and Pete built a bridge made of toothpicks. Ken worked 3$$\frac{1}{3}$$ hours on the bridge, and Pete worked $$\frac{1}{2}$$ hour more than Ken. So the total time did Pete spend working on the bridge is 3$$\frac{1}{3}$$+$$\frac{1}{2}$$ which is
= $$\frac{10}{3}$$ + $$\frac{1}{2}$$
= $$\frac{20+3}{6}$$
= $$\frac{23}{6}$$
= 3$$\frac{5}{6}$$ hours.

Question 2.
At Taylor School. 145 fifth-grade students display their projects in the science fair. 15 more girls than boys display their projects. How many girls and how many boys have entered the science fair?