One packet of biscuits requires 2(1/2) cups of flour and 1(2/3) cups of sugar. Estimated total quantity of both ingredients used in 10 such packets of biscuits will be
a. less than 30 cups
b. between 30 cups and 40 cups
c. between 40 cups and 50 cups
d. above 50 cups
Solution:
The amount of flour and sugar required for one packet of biscuits = [2(1/2) + 1(2/3)]
= 5/2 + 5/3
Taking LCD(least common denominator), we get (15+10)/6
= 25/6 cups
Now let us calculate the requirements of both the ingredients for 10 packets = 10 × 25/6
= 250/6 = 125/3 = 41(2/3).
This lies between 40 and 50 cups
Therefore, the estimated total quantity of both ingredients used in 10 such packets of biscuits will be between 40 and 50 cups.
✦ Try This: Evaluate 2(1/2) × 1(2/3)
To solve the above problem you can follow the fractions rules and use the multiplication property to get the required answer
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 2
NCERT Exemplar Class 7 Maths Chapter 2 Exercise Problem 15
One packet of biscuits requires 2(1/2) cups of flour and 1(2/3) cups of sugar. Estimated total quantity of both ingredients used in 10 such packets of biscuits will be: a. less than 30 cups, b. between 30 cups and 40 cups, c. between 40 cups and 50 cups, d. above 50 cups
Summary:
The estimated total quantity of both ingredients used in 10 such packets of biscuits will be between 40 and 50 cups
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