Question

20. Meera orders two kinds of pizzas, regular and extra
cheese, for a party. The regular pizza costs 140 and
extra cheese pizza costs 180. If she orders 14 pizzas
and spends *2160, how many pizzas of each kind did
she order?​

Answer 1

Answer:

Regular - 9, Extra Cheese - 5

Step-by-step explanation:

Solve by writing equations

Let the regular pizzas Meera ordered be x,

Then, extra cheese pizzas she ordered will be 14-x

Then, 140x + 180(14-x) = 2160,

➡️ 140x + 180×14 -180x = 2160,

140x - 180x = 2160 - 2520

- 40x= - 360

x = 9

Ans.Regular - 9, Extra Cheese - 5

Solve by reasoning

If she ordered 14 out out of 14 regular pizzas then, money spent = 1960, Short of 200 rupees

if she orders one extra cheese pizza than regular pizza, more money spent = 180 - 140 = 40 and 40 × 5 = 200

so Ans. is Regular - 9, Extra Cheese - 5