The price of a mobile phone is ₹ 8,250. A GST of 18% is added to the price. Which of the following gives the final price Class 8

The price of a mobile phone is ₹ 8,250. A GST of 18% is added to the price. Which of the following gives the final price Class 8

Question 1.

The price of a mobile phone is ₹ 8,250. A GST of 18% is added to the price. Which of the following gives the final price of the phone including the GST? Class 8

(i) 8250 + 18

(ii) 8250 + 1800

(iii) 8250 + [latex]\frac{18}{100}[/latex]

(iv) 8250 × 18

(v) 8250 × 1.18

(vi) 8250 + 8250 × 0.18

(vii) 1.8 × 8250

Solution:

(v) and (vi).

Question 2.

The monthly percentage change in population (compared to the previous month) of mice in a lab is given : Month 1 change was +5%, Month 2 change was -2%, and Month 3 change was - 3%. Which of the following statement(s) are true? The initial population is p. Class 8

(i) The population after three months was p × 0.05 × 0.02 × 0.03.

(ii) The population after three months was p × 1.05 × 0.98 × 0.97.

(iii) The population after three months was p + 0.05 - 0.02 - 0.03.

(iv) The population after three months was p.

(v) The population after three months was more than p.

(vi) The population after three months was less than p.

Solution:

(ii) and (vi).