Question

Obtain information and write about simple methods of spotting the
adulteration in any five food items.​

Answer 1

Explanation:

Area of the trapezium =

2

1

×(sumofparallelsides)×h

138=

2

1

×(sum)×12

sum=

6

138

=23

∴a+b=23−−−−−−−(1)

Now the difference is given,

a−b=7−−−−−−−(2)

Adding equation (1) and (2)

2a=30

a=15

∴b=8

Answer 2

Explanation:

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