Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions

A VCR and TV were bought for Rs 8,000 each. The shopkeeper made a loss of 4% on the VCR and a profit of 8% on the TV. Find the gain or loss percent on the whole transaction.

A milkman sold two of his buffaloes for Rs 20,000 each. On one he made a gain of 5% and on the other a loss of 10%. Find his overall gain or loss.

(Hint: Find CP of each)

A suitcase with measures 80 cm × 48 cm × 24 cm is to be covered with a tarpaulin cloth. How many metres of tarpaulin of width 96 cm is required to cover 100 such suitcases?

If \[\overline{{98215x2}}\] is a number with x as its tens digit such that is is divisible by 4. Find all possible values of x.

If x denotes the digit at hundreds place of the number \[\overline{{67x19}}\] such that the number is divisible by 11. Find all possible values of x.

Factorize each of the following expression:
16x² − 25y²

Factorize each of the following expression:
27x² − 12y²

Factorize each of the following expression:
144a² − 289b²

Factorize each of the following expression:
12m² − 27

Factorize each of the following expression:
125x² − 45y²

Factorize each of the following expression:
144a² − 169b²

Factorize each of the following expression:
(2a − b)² − 16c²

Factorize each of the following expression:
(x + 2y)² − 4(2x − y)²

Factorize each of the following expression:
3a⁵ − 48a³

Factorize each of the following expression:
a⁴ − 16b⁴

Factorize each of the following expression:
64 − (a + 1)²

Factorize each of the following expression:
36l² − (m + n)²

Factorize each of the following expression:
25x⁴y⁴ − 1

Factorize each of the following expression: