Question

Q.8 Word problem; -
a) Sunil was given a design to make. He completed 3/5 of it. How
much is left?​

Answer 1

Answer:

2/5 is left

Explanation:

As The whole will be 5/5

he completed 3/5

left 5/5-3/5=2/5

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Answer 2

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Given:

Sunil completed 3/5 of design

To find:

How much design is left to complete = ?

Solution:

Note: Fraction addition always equal to 1 when total is not given

Let x be the work left to do

$\\ \\ \dfrac{3}{5} + x = 1 \\ \\x = 1 - \dfrac{3}{5} \\ \\ x = \dfrac{5 - 3}{5} \\ \\ x = \dfrac{2}{5}$

Required answer:

Thus, 2/5 work is left to complete by Sunil

Knowledge booster:

# When solving for fraction, if total is not given then add the fraction equal to one

# While adding fraction, add when the denominator are same. If denominator are unequal then make denominator equal by lowest common multiple (LCM) and solve or do cross multiplication and solve

$\\ \\ \dfrac{2}{3} + \dfrac{3}{5} \\ \\ \: denominator \: are \: different \\ by \: lcm \:lowest \: common \: multiple \: \\ of \: 3 \: and \: 5 \: is \: 15 \\ \\ = \dfrac{2 \times 5 + 3 \times 3}{15} = \dfrac{19}{15}$

# Solve more such questions to get good hold on it