Question

b) Ramya bought some ice creams. She has 3 cups of 15 each, and some
cones. If the number of cones is equal to the price of each cone, what is the
algebraic expression for the total cost of the ice creams?
(0) 15x + 3 (ii) x + 45
(W x +45
(iv) 15 + 3x​

Answer 1

Answer:

The cost of 3 chocolates, 5 biscuits, and 5 ice creams is 195. What is the cost of 7 chocolates, 11 biscuits and 9 ice creams?

(1) The cost of 5 chocolates, 7 biscuits and 3 ice creams is 217.

(2) The cost of 4 chocolates, 1 biscuit and 3 ice creams is 141.

Given:

if we subtract the two equations, we'll get

;. so if we know this value, we can find the total cost.

statement 1:

. add this to given equation

;

knowing the value of is sufficient to calculate .

statement 2:

this is not sufficient.

even if we add this equation with the given equation, we get

, so we still the value of .

not sufficient

Ans: A