Based on the marginal propensity to consume and the change in income, the change in consumption was $7.2 billion.
The change in consumption can be found as:
= Change in income x Marginal propensity to consume
Solving gives:
= 12 billion x 0.6
= $7.2 billion.
Find out more on marginal propensity to consume at https://brainly.com/question/17930875.